Thursday, November 23, 2017

One Rat, Two Rats, Red Rats, Blue Rats

New Zealand’s War on Rats Could Change the World


The nation wants to eradicate all invasive mammal predators by 2050. Gene-editing technology could help—or it could trigger an ecological disaster of global proportions.

The Atlantic   


The first thing that hit me about Zealandia was the noise.

I was a 15-minute drive from the center of Wellington, New Zealand’s capital city, but instead of the honks of horns or the bustle of passersby, all I could hear was birdsong. It came in every flavor—resonant coos, high-pitched cheeps, and alien notes that seemed to come from otherworldly instruments.

Much of New Zealand, including national parks that supposedly epitomize the concept of wilderness, has been so denuded of birds that their melodies feel like a rare gift—a fleeting thing to make note of before it disappears. But Zealandia is a unique 225-hectare urban sanctuary into which many of the nation’s most critically endangered species have been relocated. There, they are thriving—and singing. There, their tunes are not a scarce treasure, but part of the world’s background hum. There, I realized how the nation must have sounded before it was invaded by mammals.
 
Until the 13th century, the only land mammals in New Zealand were bats. In this furless world, local birds evolved a docile temperament. Many of them, like the iconic kiwi and the giant kakapo parrot, lost their powers of flight. Gentle and grounded, they were easy prey for the rats, dogs, cats, stoats, weasels, and possums that were later introduced by humans. Between them, these predators devour more than 26 million chicks and eggs every year. They have already driven a quarter of the nation’s unique birds to extinction.

Many species now persist only in offshore islands where rats and their ilk have been successfully eradicated, or in small mainland sites like Zealandia where they are encircled by predator-proof fences. The songs in those sanctuaries are echoes of the New Zealand that was.

But perhaps, they also represent the New Zealand that could be.

In recent years, many of the country’s conservationists and residents have rallied behind Predator-Free 2050, an extraordinarily ambitious plan to save the country’s birds by eradicating its invasive predators. Native birds of prey will be unharmed, but Predator-Free 2050’s research strategy, which is released today, spells doom for rats, possums, and stoats (a large weasel). They are to die, every last one of them. No country, anywhere in the world, has managed such a task in an area that big. 

The largest island ever cleared of rats, Australia’s Macquarie Island, is just 50 square miles in size. New Zealand is 2,000 times bigger. But, the country has committed to fulfilling its ecological moonshot within three decades.
Beginning as a grassroots movement, Predator-Free 2050 has picked up huge public support and official government backing. Former Minister for Conservation Maggie Barry once described the initiative as “the most important conservation project in the history of our country.” If it works, Zealandia’s fence would be irrelevant; the entire nation would be a song-filled sanctuary where kiwis trundle unthreatened and kakapos once again boom through the night.

By coincidence, the rise of the Predator-Free 2050 conceit took place alongside the birth of a tool that could help make it a reality—CRISPR, the revolutionary technique that allows scientists to edit genes with precision and ease. In its raw power, some conservationists see a way of achieving impossible-sounding feats like exterminating an island’s rats by spreading genes through the wild population that make it difficult for the animals to reproduce. Think Children of Men, but for rats. Other scientists, including at least one gene-editing pioneer, see the potential for ecological catastrophe, beginning in an island nation with good intentions but eventually enveloping the globe.

In 2007, a retiree named Les Kelly returned to New Zealand after 25 years of working in Australia, and marked his homecoming with a four-month walking tour. And during that time, he realized that something had gone horribly wrong. The birds he remembered from his youth were gone. Learning that introduced pests were responsible, he conceived a bold plan to purge them and championed it through a self-created lobby group called Predator-Free New Zealand. Word got around, and in 2011, a regionally famous physicist named Paul Callaghan mentioned the idea in a rousing speech at Zealandia. “It can be done,” he said. “It’s crazy but it’s ambitious, and I think it might be worth a shot. I think it’s our great challenge.”

Callaghan died a few months later, but those words, delivered by a well-liked celebrity, kept gathering momentum. They certainly lit a fire in James Russell, a young ecologist who was born and raised in New Zealand. “I grew up in suburban Auckland with kakariki—these really rare parakeets that my mother raised,” he tells me. “Now, rats kill most of them, and it breaks my heart.” In 2015, he and three colleagues wrote a paper in which they laid out the benefits of eradicating pests nationwide, and estimated that a 50-year scheme would cost 9 billion NZD ($6 billion).

From there, the idea became a movement. “It stopped being aspirational,” Russell says. The government got on board, setting up a limited company to administer an initial $28 million NZD worth of funds. The public embraced the idea, too. People who had been individually trying to control invasive predators on their own land found common cause behind a unifying theme.

There are, of course, naysayers. Some accuse the initiative of ecological xenophobia, unfairly persecuting creatures that didn’t hail from New Zealand but sure as hell are part of it now. But Russell notes that these displaced predators are still wreaking havoc. “Something is going to die,” he says. “Either a bird is going to be killed by a rat that we brought here, or we’re going to kill the rat. And I would rather humanely kill the rat than have the rat inhumanely kill a bird.”
Other skeptics say that the task is simply too huge. So far, conservationists have successfully eradicated mammals from 100 small islands, but these represent just 10 percent of the offshore area, and just 0.2 percent of the far larger mainland. It’s one thing to cull pests on small, waterlocked pimples of land whose forests are almost entirely owned by the government. It’s quite another to repeat the feat in continuous stretches of land, dotted by cities and private homes.

But Russell, ever the optimist, notes that the daunting ascent ahead shouldn’t distract people from the path already climbed. In 1963, after decades of unsuccessfully trying to save birds from invasive predators, the legendary conservationist Don Merton finally divested a tiny island of its rats, by poisoning them by hand. In later decades, when the Department of Conservation started dropping poisoned bait by helicopter, larger islands became rat-free. Heavily visited islands just off the coast of Auckland were cleared. The mainland is a much bigger challenge but one that could be tackled gradually, by creating large sanctuaries like Zealandia and slowly expanding them. “This is a 2050 aspiration,” says Russell. “It’s not going to be solved in 3 to 5 years.”

“It has become less about technical feasibility but about cost,” he adds. “We could just use the tech today but it would be infinitely expensive. We need new control techniques that would be orders of magnitude cheaper. And that’s when we get into questions about CRISPR.”
In 2014, Kevin Esvelt, a biologist at MIT, drew a Venn diagram that troubles him to this day. In it, he and his colleagues laid out several possible uses for gene drives—a nascent technology for spreading designer genes through groups of wild animals. Typically, a given gene has a 50-50 chance of being passed to the next generation. But gene drives turn that coin toss into a guarantee, allowing traits to zoom through populations in just a few generations. There are a few natural examples, but with CRISPR, scientists can deliberately engineer such drives.

Suppose you have a population of rats, roughly half of which are brown, and the other half white. Now, imagine there is a gene that affects each rat's color. It comes in two forms, one leading to brown fur, and the other leading to white fur. A male with two brown copies mates with a female with two white copies, and all their offspring inherit one of each. Those offspring breed themselves, and the brown and white genes continue cascading through the generations in a 50-50 split. This is the usual story of inheritance. But you can subvert it with CRISPR, by programming the brown gene to cut its counterpart and replace it with another copy of itself. Now, the rats’ children are all brown-furred, as are their grandchildren, and soon the whole population is brown.

Forget fur. The same technique could spread an antimalarial gene through a mosquito population, or drought-resistance through crop plants. The applications are vast, but so are the risks. In theory, gene drives spread so quickly and relentlessly that they could rewrite an entire wild population, and once released, they would be hard to contain. If the concept of modifying the genes of organisms is already distasteful to some, gene drives magnify that distaste across national, continental, and perhaps even global scales.
Esvelt understood that from the beginning. In an early paper discussing gene drives, he and his colleagues discussed the risks, and suggested several safeguards. But they also included a pretty Venn diagram that outlined several possible applications, including using gene drives to control invasive species—like rats. That was exactly the kind of innovation that New Zealand was after. You could spread a gene that messes with the rodent’s fertility, or that biases them toward one sex or the other. Without need for poisons or traps, their population would eventually crash.

Please don’t do it, says Esvelt. 

Through mathematical simulations conducted with colleagues at Harvard, he has now shown that gene drives are even more invasive than he expected. Even the weakest CRISPR-based gene drives would thoroughly invade wild populations, if just a few carriers were released. They’re so powerful that Esvelt says they shouldn’t be tested on a small scale. If conservationists tried to eliminate rats on a remote island using gene drives, it would only take a few strongly swimming rodents to spread the drive to the mainland—and beyond. “You cannot simply sequester them and wall them off from the wider world,” Esvelt says. They’ll eventually spread throughout the full range of the species they target. And if that species is the brown rat, you’re talking about the entire planet.
Together with Neil Gemmell from the University of Otago, who is advising Predator-Free 2050, Esvelt has written an opinion piece explicitly asking conservationists to steer clear of standard gene drives. “We want to really drive home—ha ha—that this is a technology that isn’t suitable for the vast majority of potential applications that people imagine for it,” he says. (The only possible exceptions, he says, are eliminating certain diseases like malaria and schistosomiasis, which affect hundreds of millions of lives and have proven hard to control.)

It’s not ready yet, either. Even if gene drives were given a green light today, Gemmell says it would take at least 2 to 3 years to develop carrier animals, another 2 years to test those individuals in a lab, and several years more to set up a small field trial. And these technical hurdles pale in comparison to the political ones. Rats are vermin to many cultures, but they’re also holy to some, and they’re likely to be crucial parts of many ecosystems around the world. 

Eradicating them is not something that any single nation could do unilaterally. It would have to be a global decision—and that’s unlikely. Consider how much effort it has taken to reach international agreements about climate change—another crisis in which the actions of certain nations have disproportionately reshaped the ecosystems of the entire world. Genetic tools have now become so powerful that they could trigger similar changes, but faster and perhaps more irreversibly.
“In a global society, we can’t act in isolation,” says Gemmell. “Some of these tools we’re thinking about developing will cross international borders. New Zealand is an island nation relatively isolated from everyone else, but what if this was a conversation happening in the United States about eradicating rodents? What if Canadians and Mexicans had a different view? This is something that should be addressed.”

Russell agrees with a precautionary approach but he isn’t ready to dismiss gene drives yet. For a start, he feels that Esvelt’s simulations overestimate the risk that such drives would establish themselves in the wild. Yes, rats are very good at traveling and colonizing new lands, but they’re surprisingly bad at invading places where other rats already exist. “Rats have a strong incumbent advantage,” he says. “You really have to introduce a lot of individuals” for them to successfully invade an already-established population.

Esvelt thinks that people would do exactly that. Gene-drive rats may not be able to swim or stow away in sufficient numbers to occupy new lands, but people could carry them. There is precedent for this: In 1997, farmers illegally smuggled a hemorrhagic virus into New Zealand to control rabbit pests. They could just as easily smuggle gene-drive rats in the other direction, to control the rodents in their own particular corners of the world. “New Zealand has very good biosecurity but it’s mostly focused on stopping things from getting in,” says Gemmell. “I’m not sure we’re that good at stopping things from getting out.”
If gene drives are deployed, it’s not unreasonable to imagine a black market in genetic rodenticide, which is exactly the kind of deliberate malfeasance that Esvelt says scientists rarely anticipate. “We don’t consider everything that will happen when technology gets in touch with reality,” he says.

All of this assumes that genes drives would be used to spread genes that kill or suppress pests outright. Instead, conservationists could use them to spread genes that are tied to particular ecosystems. “Imagine giving all rats in New Zealand a peanut butter allergy, and then we feed them all peanut butter,” Russell says. “Well sure,” Esvelt counters, “but then you’ve just converted all the rats in the world into GMOs without asking other countries.” The same problem remains: How do you keep the modification from spreading beyond New Zealand?

Esvelt is working on a couple of tricks for corralling the awesome power of gene drives. In a basic gene drive, a chosen gene has all the components it needs to spread itself. But you could split those components between several genes that are connected in a daisy chain, so that gene C is driven by gene B, B is driven by A, and A is driven by nothing. If rats with these genes were released into the wild, the A-carriers would initially spread the B and C genes, but would eventually disappear themselves. After they go, B would follow. Ultimately, so would C. These “daisy drives,” as Esvelt calls them, are self-exhausting. They’re designed to run out of steam. If they work, they are tools that countries could justifiably use without involving the entire world.
To be clear, despite the buzz around gene drives in New Zealand’s conservation circles, there are no concrete plans to actually use them. “There is currently no research being conducted in New Zealand to develop gene drives for Predator-Free targets, nor are there any plans for such research in the near future,” says Andrea Byrom, director of New Zealand’s Biological-Heritage National Science Challenge. Indeed, Predator-Free 2050’s research strategy mentions only the most exploratory of steps, such as sequencing the genomes of local rats, talking to international experts like Esvelt, and running mathematical simulations. Genuine research into the drives themselves wouldn’t begin any earlier than 2020, and would depend on “technological hurdles being surmounted, supportive policy, and New Zealand/international appetite to proceed.”

The group has also funded social research looking into how New Zealanders feel about using genetic technologies to control pests. That’s the right order, Byrom says: Work out what people want, and act accordingly. The first results, published this week, showed that 32 percent of the 8,000 people surveyed were comfortable with technologies like gene drives, 18 percent felt that they should never be used, and 50 percent were undecided or wanted strong controls.

Much of this work has been done in consultation with Māori scientists and tribal leaders. But “the conversation happens in pockets, around networks that scientists have,” says Maui Hudson from the University of Waikato, who studies Māori research ethics. 

That’s good for working out the Māori perspective on gene drives, but not for actually engaging those communities in the debate about the risks. Aroha Te Pareake Mead, a political scientist who has studied indigenous perspectives on biotechnology, agrees that there hasn’t yet been a robust and far-ranging discussion with Māori groups (iwi). “The idea of a predator-free New Zealand is widely endorsed throughout Māoridom,” she says. It fits with the concept of kaitiaki or guardianship—the imperative to protect one’s biological heritage. But the means of achieving that goal are more contentious.

“We’ve had many initiatives over the years that have sought to address environmental concerns, with unintended detrimental consequences,” Mead says. “Māori tend to have a precautionary approach because we’ve already had many cases of wrongdoing for the right reasons. Generally speaking, we are suspicious of any kind of genetic modification.”
Despite those reservations, she enjoyed meeting Esvelt two months ago, when he spoke about daisy drives at a community meeting. “I found him to be refreshing as a scientist,” she says. “He wasn’t defensive and he thought that questioning the risks was essential. 

That gave the Māori who were present a lot of comfort because we’re used to a very different type of geneticist who comes in, says this is the best thing since sliced bread, and if you question it, you’re ignorant and you don’t know the science. We want to be given a range of tools and to make an informed decision about the best one for the purpose.”

Gene drives are not the only game in town. The people behind Predator-Free 2050 are also working on ways of upgrading tried-and-tested technology. The most commonly used traps, for example, are simple one-use devices that must be manually checked and reset. But some companies have made self-resetting traps that can repeatedly kill dozens of rats with a gas-powered piston to the head, or traps that can spray 100 stoats with toxins before needing to be reset. Others are developing sensors that will tell trappers when their snares have snagged an animal, so they don’t have to laboriously check every one.

These traps are typically baited with food, but food goes off in the field and must be frequently restocked. Ironically, it also becomes less effective in well-protected areas where actual prey are common. But stoats, it turns out, are far more attracted to the scent of ferrets—a fellow species of weasel—than they are to food smells. Scientists are now trying to isolate the chemicals that make Eau de Ferret so enticing, to turn them into a super-lure.
Aerial drops of 1080 poison, which have freed so many islands from predators, will almost certainly be part of any mainland campaign. Its use is controversial: It can harm the playful kea parrot, and the occasional unwary pet dog. But conservationists could deploy poisons more effectively if they had better ways of detecting pests, like footpad sensors that could track a rodent’s footfalls, or cameras whose images are automatically analyzed by artificial intelligence. One team is also trying to develop more specific toxins, by analyzing the genome of possums to find chemicals that will affect them alone.

And Russell believes that for Predator-Free 2050 to succeed, it has to marshal the most effective tool around: human enthusiasm. Thousands of volunteer groups already exist around the country, monitoring for invasive species and setting traps. That kind of fervor has to spread, especially if mammals are to be exiled from cities. Any pockets of resistance or apathy would create strongholds where pests could thrive. “Conservation must be something that happens not just in national parks and the backcountry, but in people’s backyards,” Russell says. “They not only allow it but participate in it.”

Regardless of the technology that Predator-Free 2050 eventually settles on, there’s no question that such measures are needed. Consider the kakapo—New Zealand’s endearing, bumbling, giant, flightless parrot. In the 1960s, people thought it was extinct. Now, after the discovery of a surviving population and three decades of intense work, the population stands at 153.
The adults have been relocated to predator-free islands, but “in terms of large sites that would hold a decent population, we’ve saturated the market,” says Deidre Vercoe, a manager at the Kakapo Recovery program. Her team will have to start releasing the birds into places where stoats and rats are still a threat. If Predator-Free 2050 achieved its goal, they could do so with relaxed smiles rather than gritted teeth. Even if Stewart Island, New Zealand’s third-largest island, could be stripped of predators, “it would be an answer for kakapo for many, many years,” she says.

New Zealand is far from the only country grappling with these issues. Over the last seven centuries, 60 percent of the vertebrates that have disappeared from the planet have disappeared from islands—and in half of those cases, invasive species are the culprits. If Predator-Free 2050 makes the right choices, it can indeed change the world—but not with an unstoppable wave of gene-drive rodents. Instead, it’ll show other nations that islands can be protected, that invasive pests can be eradicated, that vanishing wildlife can be saved—even at scales once thought impossible.

“Even if we don’t get to the finish line, the fact that we ran most of the marathon will be pretty damn impressive,” says Russell.

Spilling the Salt

Monte Kali: A Mountain of Table Salt

Monte Kali is an unusual landmark in the small town of Heringer in eastern Hesse, Germany. It’s a spoil heap containing nothing but sodium chloride or common table salt, which is a byproduct of potash mining. For over a hundred years, potash mining has been a major industry in the region. It started with the opening of Wintershall potash works, which began mining in 1903, and today is the world’s biggest potash mine with an operational area about the size of Greater Munich’s.

Potash mining produces a mixture of potash and sodium chloride, with potassium content between 20% and 35%. Thus, for every ton of potash recovered, several tons of sodium chloride is produced. 
This is dumped at several sites around the region. The dumps contain up to 96% sodium chloride.

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Monte Kali began growing in 1973, and it’s where the K+S chemical company dumps sodium chloride. The heap rises over 200 meters above the surrounding land, and as of January 2014, covered an area of 93 hectares. It contains as approximately 188 million tonnes of salt, with another 900 tonnes being added every hour and 6.4 million tonnes a year.

Lying next to the border with the state of Thuringia, Monte Kali towers over Heringen and is a popular attraction. Locals refer to it as “Kalimanjaro” — a play of words between Kali (shorthand for Kalisalz, German for "potash") and the famous volcanic peak Mount Kilimanjaro. More than 10,000 visitors climb the artificial mountain every year.

But Monte Kali and other spoil heaps in the region are environmentally destructive. An enormous amount of salt seeps into the ground polluting the soil, rivers and groundwater. The surrounding soil has become virtually barren and only a few halophyte plants resistant to salt can grow there. The Werra river too has become inhospitable to freshwater organisms.

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Turn Off That Light!

A nighttime view of Europe made possible by the 'day-night band' of the Visible Infrared Imaging Radiometer Suite (VIIRS) is seen in a global composite assembled from data acquired by the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite in 2012 and released by NASA in 2014 . | NASA / HANDOUT / VIA REUTERS

Light pollution at night seen increasing worldwide amid surge in LED use

The Japan Times  AP
The world’s nights are getting alarmingly brighter — bad news for all sorts of creatures, humans included.

A German-led team reported Wednesday that light pollution is threatening darkness almost everywhere. Satellite observations during five Octobers show Earth’s artificially lit outdoor area grew by 2 percent a year from 2012 to 2016. So did nighttime brightness.

Light pollution is actually worse than that, according to the researchers. Their measurements coincide with the outdoor switch to energy-efficient and cost-saving light-emitting diodes, or LEDs. Because the imaging sensor on the polar-orbiting weather satellite can’t detect the LED-generated color blue, some light is missed.

The observations, for example, indicate stable levels of night light in the United States, Netherlands, Spain and Italy. But light pollution is almost certainly on the rise in those countries given this elusive blue light, said Christopher Kyba of the GFZ German Research Center for Geosciences and lead author of the study published in Science Advances.
 
This photo combo of images provided by NASA's Earth Observatory/Kyba, GFZ shows photographs of Calgary, Alberta, taken from the International Space Station on Dec. 23, 2010 (left), where residential areas are mainly lit by orange sodium lamps; and on Nov. 27, 2015, where many areas on the outskirts are newly lit compared to 2010, and many neighborhoods have switched from orange sodium lamps to white LED lamps. | NASA'S EARTH OBSERVATORY / KYBA, GFZ / VIA AP
 

Also on the rise is the spread of light into the hinterlands and overall increased use. The findings shatter the long-held notion that more energy efficient lighting would decrease usage on the global — or at least a national — scale.

“Honestly, I had thought and assumed and hoped that with LEDs we were turning the corner. There’s also a lot more awareness of light pollution,” he told reporters by phone from Potsdam. “It is quite disappointing.”

The biological impact from surging artificial light is also significant, according to the researchers.

People’s sleep can be marred, which in turn can affect their health. The migration and reproduction of birds, fish, amphibians, insects and bats can be disrupted. Plants can have abnormally extended growing periods. And forget about seeing stars or the Milky Way, if the trend continues.

About the only places with dramatic declines in night light were in areas of conflict like Syria and Yemen, the researchers found. 

Australia also reported a noticeable drop, but that’s because wildfires were raging early in the study. Researchers were unable to filter out the bright burning light.

Asia, Africa and South America, for the most part, saw a surge in artificial night lighting.

More and more places are installing outdoor lighting given its low cost and the overall growth in communities’ wealth, the scientists noted. Urban sprawl is also moving towns farther out. The outskirts of major cities in developing nations are brightening quite rapidly, in fact, Kyba said.

Other especially bright hot spots: sprawling greenhouses in the Netherlands and elsewhere.

Photos taken by astronauts aboard the International Space Station also illuminate the growing problem.

Franz Holker of the Leibniz Institute of Freshwater Ecology and Inland Fisheries in Berlin, a co-author, said things are at the critical point.

“Many people are using light at night without really thinking about the cost,” Holker said. Not just the economic cost, “but also the cost that you have to pay from an ecological, environmental perspective.”

Kyba and his colleagues recommend avoiding glaring lamps whenever possible — choosing amber over so-called white LEDs — and using more efficient ways to illuminate places like parking lots or city streets. For example, dim, closely spaced lights tend to provide better visibility than bright lights that are more spread out.

The International Dark-Sky Association , based in Tucson, Arizona, has been highlighting the hazards of artificial night light for decades.

“We hope that the results further sound the alarm about the many unintended consequences of the unchecked use of artificial light at night,” Director J. Scott Feierabend said in a statement.

An instrument on the 2011-launched U.S. weather satellite, Suomi, provided the observations for this study. A second such instrument — known as the Visible Infrared Imaging Radiometer Suite, or VIIRS — was launched on a new satellite Saturday by NASA and the National Oceanic and Atmospheric Administration. This latest VIIRS will join the continuing night light study.

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Read more about the The International Dark-Sky Association

Turkeys







Mike Bukay

Ranch Horses



9 Quarter Circle

Sandwiched between the borders of West Yellowstone and Big Sky, the 9 Quarter Circle Ranch is a rustic collection of log cabins and stables cradled in a valley of the Rocky Mountains. It’s here one finds Kameron Kelsey, the third-generation steward of the 9QC. 

The Kelsey family pride themselves on their adherence to tradition, as the ranch exists in something of a time warp, its practices mostly unchanged over the past 70 years. 

Due to the high elevation of the ranch, weather during the winter months is exceptionally perilous. 

Every fall, the ranch’s horses are taken down to a lower elevation pasture to live out the cold months in more favorable conditions. Each June, come rain or shine, the Kelseys, along with a group of a dozen or so wranglers, family, and friends, come together to push the herd 20 plus miles back up to the ranch, in a near sacred ritual they dub “The Round Up”. Of all the 9QC practices, this one is perhaps the most antiquated, and is the one the Kelsey family are most proud to preserve. It’s an exhaustive three-day marathon, one that takes them across a variety of terrain. 

Would it be simpler to gather the animals and truck them up to the ranch? Absolutely, but this isn’t about being easy. It’s about holding onto tradition.

Watch it HERE





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Directed by: Kristopher Rey-Talley
Produced by: Rad Roubeni, Kristopher Rey-Talley & Phil Pinto
Executive Produced by: Jinhee Chu, Rad Roubeni
Photography by: Ryan Dickie, Sam Wootton, Josh Goleman, Kristopher Rey-Talley
Edited by: Alex Camilleri, Kristopher Rey-Talley, Ed Yonaitis
Color by: Mike Howell
Sound Design by: Greg Tobler, Colin Alexander

Bamboo Fruit & Flowers

The Mysterious Phenomenon of Bamboo Flowering
Bamboos are the fastest-growing plants on Earth. A typical bamboo grows as much as 10 centimeter in a single day. Certain species grow up to a meter during the same period, or about 1 millimeter every 2 minutes. You can actually see the plant grow in front of your eyes. Most species of bamboo reach maturity in just 5 to 8 years. Compare this to other popular hard woods that barely grow an inch in a week. Trees such as oak, can take up to 120 years to reach maturity. But when it comes to flowering, bamboos are probably one of the slowest plants in the world. 

The flowering of bamboos is an intriguing phenomenon, because it is a unique and very rare occurrence in the plant kingdom. Most bamboos flower once every 60 to 130 years. The long flowering intervals remain largely a mystery to many botanists.

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Bamboo flowering in spring in a garden in Roskilde, Denmark. Photo credit 

These slow flowering species exhibit another strange behavior — they flower all at the same time, all over the world, irrespective of geographic location and climate, as long as they were derived from the same mother plant. Most bamboos are exactly that — they are ‘division’ taken from the same mother plant at some point. These divisions were re-divided over time and shared across the world. Although the divisions are now geographically in different locations, they still carry the same genetic makeup.

So when a bamboo plant in, say, North America flower, the same plant in Asia will do the same at roughly the same time. It is as if the plants carry an an internal clock ticking away until the preset alarm goes off simultaneously. This mass flowering phenomenon is called gregarious flowering.

According to one hypothesis, mass flowering increases the survival rate of the bamboo population. The hypothesis argues that by flooding the area with fruit, there will still be seeds left over even if predators eat their fill. By having a flowering cycle longer than the lifespan of the rodent predators, bamboos can regulate animal populations by causing starvation during the period between flowering events. The hypothesis still does not explain why the flowering cycle is 10 times longer than the lifespan of the local rodents.

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Once a bamboo species has reached its life expectancy, had flowered and produced seeds, the plant dies, wiping out entire swaths of forests over a several year period. One theory is that seed production requires an enormous amount of energy which stresses the bamboo plant to such an extent that they actually die. Another theory suggests that the mother plant dies to make room for the bamboo seedlings.

The mass flowering events also attract predators, mainly rodents. The sudden availability of fruits in huge quantities in the forest brings in a tens of millions of hungry rats who feed, grow and multiply at alarming rates. After they devour the bamboo fruit, the rats start consuming crops — both stored as well as on fields. A bamboo flowering event is almost always followed by famine and disease in nearby villages. In the northeastern India's state of Mizoram, the dreaded event occurs almost like clockwork every 48 to 50 years, when the bamboo species Melocanna baccifera flowers and fruits. The phenomenon, which occurred last in 2006 to 2008, is known in the local language as mautam or "bamboo death."

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A black rat munches on corn in a field near Zamuang village in northeastern Mizoram. Photo credit

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Children captures rats after a bamboo flowering season in Burma. Photo credit

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The Fargesia nitida, in flower, once in 120 years. Photo credit

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Sources: Wikipedia / Bamboo Botanicals / Guadua Bamboo / Nat Geo

Wednesday, November 22, 2017

Travel to Mordor and Toss Your Canceled Chase Sapphire Preferred Card into Mount Doom

Metal credit cards: The latest American status symbol



Market Watch  MariaLaMagna  May 13, 2017

There’s a reason almost every new, flashy credit card looks the same



American Express


Metal isn’t just for your keys, pocket change and jewelry any more.

If you’ve been in the market for a new, high-end credit card recently, you may have noticed something: Many of them look pretty much the same. Several credit cards that have debuted in the last year have incredibly similar designs: minimalist, with almost no writing or numbers on their fronts. And, instead of plastic, they are increasingly made of metal. 



They’ve become the newest status symbol for consumers who like their travel rewards. “People will seldom admit they took a card out just because of what it feels like in their hand, but there’s no doubt subconsciously it makes a big difference,” said Gerard du Toit, a Boston-based partner at the consulting firm Bain & Company, who is the head of the firm’s banking practice in the Americas.

It’s difficult to track the number of metal cards currently on the market because credit-card companies are reluctant to say how many card members they have, but in the last several years, issuers’ interest in metal cards has spiked, said Troy Bernard, the director of strategic marketing and products at CPI Card Group, a Littleton, Colo.-based company that manufactures payment cards.


Card companies targeting high spenders will go to great lengths to impress them and differentiate themselves from the competition, he said, despite the fact that metal cards may cost around $30 to $50 to produce, about 10 to 20 times more than plastic cards, Bernard said.

U.S. Bank USB, -0.02%   last week announced a new travel credit card, the U.S. Bank Altitude Reserve Visa V, -0.47%   Infinite Card, which the bank hopes will compete with already-popular travel cards like Chase’s JPM, -0.21%   Sapphire Reserve and American Express’s AXP, -0.74%   Platinum. And Amazon AMZN, +1.48%   used a minimalist metal design for its Prime Rewards Visa card in January.Chase declined to say how many people signed up for the Sapphire Reserve card, but the company said in its 2017 Investor Day presentation that more than 10.4 million people opened new Chase credit-card accounts in 2016.


 
U.S. Bank’s new credit card. US Bank
American Express also declined to say how many people have Platinum cards, and Amazon did not respond to a request for comment. 

Not only does the latest U.S. Bank card offer similar rewards and perks, but it looks incredibly similar to those cards. That’s no coincidence, said Sean McQuay, a credit card expert at the personal finance company NerdWallet. The Sapphire Reserve and American Express Platinum have set the bar for these high-end cards, even if the various rewards don’t all match up. “They are probably thinking, ‘We can at least copy the metal part,’” he said.

American Express has offered a metal credit card since 1999: Its Centurion card, made of titanium. It released its metal Platinum Card, which comes in stainless steel, in March 2017. But three new blockbuster metal cards in one year with hundreds of dollars in points every year is a notable development, Bernard of CPI Card Group said. A spokeswoman for American Express said consumers care about design, from the physical card they use to their cards’ mobile apps.


And, 10 years after the Centurion, Chase started issuing its Palladium card in metal, and soon realized the cache associated with metal cards. In 2011, the company patented its embedded metal design and started to roll out its Sapphire Preferred card in embedded metal. The company uses a proprietary blend of metals, a spokeswoman said. When Chase debuted its Sapphire Reserve card in 2016, it proved so popular that the company temporarily ran out of the metal version of the card.

That card is designed to be “sleek,” but it shouldn’t say, “I’ve arrived,” said Lisa Walker, the general manager of Chase Sapphire Cards. It should say, “I’m interesting.” But she said the metal cards are not designed to have the same punch as, say, a Rolex Watch (even if you can buy one with the other). “The Sapphire brand is not an ostentatious brand,” she said. “It has a weight to it and that ‘plunk’ factor, but it doesn’t ring like a bell when you drop it on the table.”

Despite the eagerness of card issuers to get into the metal card game, not all customers see the trend as a good thing. The cards are heavier than plastic ones, for starters, which could weigh down a wallet. When Brian Stucki, a Las Vegas-based vice president at a technology company, got an Amazon Prime card recently, he soon switched it for a plastic version. “For a guy that prefers a thin and light wallet (and also doesn’t spend very much), it was a downgrade,” he said.

They’re not always as convenient as plastic. Disposing of the cards is harder than cutting up or shredding a plastic one. Card companies send cardholders pre-stamped envelopes to send cards back when they need to get rid of or exchange them, then get rid of the cards themselves, often recycling the materials it took to make them.


Still, there’s no flashy status symbol associated with using your phone to make a payment, even if it’s the latest iPhone. In fact, millennials are embracing credit cards faster than they’re turning to mobile payments.That’s good news for companies marketing high-end credit cards. “We don’t anticipate the physical card being replaced in the near future,” Walker said.

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OK, so I applied for the Amazon Rewards Card, and was accepted.  When the card arrived I noticed 2 things about it.  It was heavy, and it didn't have the cc number on the front.  This last I can see.  The number is on the back, which may make it harder for the criminal in line behind you at Safeway to read your number and go on a spending spree with it.  

But the heaviness surprised me.  It felt like metal.  This was confirmed by a customer service agent that I spoke with about a charge that was being refused.  She sorted that problem, and I mentioned that my new card was heavy and seemed to be made of metal.  This caused her to gush, "Oooooh, lucky you!"

Well, maybe, maybe not.  But I know that this card won't go through my paper-shredder when it expires.  I understand that some issuers of the metal cards are sending postage-paid envelopes to customers with metal cards so they can be destroyed, and the metal recycled by the company.  Will a charge for this appear on my monthly statement?

I will have to wait until 2022 to find out.  It did cross my mind that the metal card might be good for cleaning pot.  But I don't smoke pot anymore, and it usually come sans seeds now anyway.