Interview: How Chinese Tiger Farms
Threaten Wild Tigers Worldwide
The number of tigers living in the wild has dropped to the shockingly low figure of 3,200, down from 100,000 a century ago.
But nearly as shocking is this statistic: An estimated 5,000 to 6,000 tigers are being legally farmed today in China, their bones steeped in alcohol to make tiger bone wine, their meat sold, and their skins turned into rugs for members of China’s wealthy elite. In an interview with Yale Environment 360
, wildlife activist Judith Mills makes a passionate case against tiger farming, explaining how these magnificent creatures are bred like cattle for their body parts, how some conservation groups have chosen not to confront the Chinese government about the farms, and how tiger farming poses a direct threat to the world’s remaining wild tigers because increased availability of these bones and pelts fuels demand that strengthens the incentive to poach wild tigers.
Read the interview.
When petroleum breaks down in underground aquifers, toxic arsenic — up to 23 times the current drinking water
Water sampling at the Minnesota oil-spill test site.
standard — can be released into groundwater, according to
a study by U.S. Geological Survey and Virginia Tech researchers, who analyzed samples collected over 32 years from a petroleum-spill research site in Minnesota. Arsenic, a toxin and carcinogen linked to numerous forms of cancer, is naturally present in most soils and sediments, but is not typically a health concern because its chemical properties keep it bound within soil and minerals. However, certain chemical reactions associated with petroleum contamination and microbial activity in low-oxygen environments, such as in aquifers, change the chemical state of the arsenic so that it can enter the groundwater, researchers say.
Interview: Giving Local Women
A Voice in Grass-Roots Conservation
The roles of women in traditional societies can be quite different from men’s, and their knowledge of the
natural world and the way in which conservation projects affect them may also be different. But these variables aren’t necessarily taken into account when developing such projects. The results can range from missed opportunities to project failure. Earlier this year, Conservation International began piloting guidelines to help integrate gender considerations into its community projects — an initiative that Kame Westerman, the "gender advisor" for that organization, helped develop. In an interview with Yale Environment 360
, Westerman discusses these guidelines, as well as the perils of ignoring gender when planning conservation initiatives.
Unable to curb poaching of rhinos within its borders, the South African government has relocated 100 rhinos
A white rhino in Kruger National Park.
in an effort to stem the illegal slaughter of the animals, Reuters reports. For security reasons, officials did not reveal to which countries the rhinos had been relocated. An additional 56 rhinos were moved from poaching hotspots within South Africa's Kruger National Park — where two-thirds of the killings happen — to an "intensive protection zone" within Kruger, officials said. Poachers killed a record number of the animals in South Africa last year — 1,215 rhinos, up 20 percent from the 2013 total — and 49 have been killed so far this year. The animals are hunted intensely because their horns, which some Asian cultures incorrectly believe contain medicinal properties, are worth an estimated $65,000 per kilogram on the black market.
Underwater Kelp Forests Mapped
In New Citizen Science Project
grow along roughly 25 percent of the world’s coastlines and provide valuable habitat and nutrients for many types of aquatic life. Now, research by the “Floating Forests
” project is shedding light on how these underwater kelp forests are affected by climate change. The project is using NASA satellite data to observe changes in kelp forests over a period of more than four decades. The catch: No accurate way to automate the process exists, so the researchers rely on an international team of nearly 3,500 citizen scientists to mark the bright green kelp forests, which contrast with the deep blues of the ocean in the images.
Researchers have discovered
craters left behind when two lakes under the Greenland ice sheet rapidly drained recently — an indication
Crater left after a Greenland lake drained.
that a massive amount of meltwater has started overflowing the ice sheet's natural plumbing and is causing "blowouts" that drain lakes away, they say. One of the two lakes once held billions of gallons of water and emptied to form a mile-wide crater in just a few weeks, researchers report in the journal The Cryosphere
. The other lake, described this week in the journal Nature
, was two miles wide and has filled and emptied twice in the last two years. The researchers suspect that as more meltwater reaches the base of the ice sheet, natural drainage tunnels along the Greenland coast are cutting further inland. The tunnels carry heat and water to areas that were once frozen to the bedrock, potentially causing the ice to melt even faster.
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Yale School of Forestry
& Environmental Studies
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Antarctica and the Arctic
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Photographer Peter Essick documents the swift changes wrought by global warming in Antarctica, Greenland, and other far-flung places. View the gallery.
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The Warriors of Qiugang
, a Yale Environment 360
video that chronicles the story of a Chinese village’s fight against a polluting chemical plant, was nominated for a 2011 Academy Award for Best Documentary (Short Subject).
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
In a Yale Environment 360
video, photographer Pete McBride documents how increasing water demands have transformed the Colorado River, the lifeblood of the arid Southwest. Watch the video.