Like ancient humans, some lemurs slumber in caves After playing, feeding, and socializing in trees all day, some ring-tailed lemurs (Lemur catta) take their nightly respite in caves, according to a new study in Madagascar Conservation and Development. The findings are important because this is the first time scientists have ever recorded primates regularly using caves (see video below).
World's biggest palm oil company makes zero deforestation commitment Wilmar, the world's largest palm oil trader and a long-time target of environmentalists, has signed a landmark policy that commits the company to eliminate deforestation from its supply chain. The deal, if fully implemented, has the potential to transform the palm oil industry, which has emerged over the past decade as one of the world's most important drivers of tropical forest destruction.
Top scientists propose ambitious plans to safeguard world from devastating climate change Two degrees is too much: that's the conclusion of a landmark new paper by top economists and climatologists, including James Hansen formerly of NASA. The paper, appearing in the open-access journal PLoS ONE, argues that global society must aim for only one degree Celsius of warming above pre-industrial levels to avoid the worst impact of climate change, and not the two degrees Celsius agreed on by the world's governments. But given that the world's governments are not yet on track to even achieve the two degree target, how could we lock in just one? A combination of renewable energy, nuclear power, and, most importantly, a rising price on carbon emissions, according to the eighteen scientists.
Humans are not apex predators, but meat-eating on the rise worldwide A new paper in Proceedings of the National Academy of Sciences has measured the "trophic level" of human beings for the first time. Falling between 1 and 5.5, trophic levels refer to where species fit on the food chain. Apex predators like tigers and sharks are given a 5.5 on trophic scale since they survive almost entirely on consuming meat, while plants and phytoplankton, which make their own food, are at the bottom of the scale. Humans, according to the new paper, currently fall in the middle: 2.21. However, rising meat-eating in countries like China, India, and Brazil is pushing our trophic level higher with massive environmental impacts.
Green investors urge companies to clean up palm oil industry A coalition of investors and asset managers is urging stakeholders in the palm oil industry to adopt policies that exclude deforestation and human rights violations from their supply chains. The call, coordinated by Green Century Capital Management, was issued in the form of letters sent to 40 major palm oil producers, financiers and buyers.