Mary McCann reports about the Crested Auklet, which makes its home in the frigid Bering Sea between Alaska and Siberia.

Bill McKibben maybe the closest thing the environmental movement has to a rock star. In November he took to the road, urging colleges to pull their endowments out of fossil fuel stocks, to pressure the industry to address climate change. Living on Earth's Emmett FitzGerald reports from Brown University in Providence, Rhode Island.

During the 2010 Gulf Coast oil spill disaster, BP used a chemical called Corexit to disperse the slicks. According to a paper recently published in the journal Environmental Pollution, that decision may have increased the damage to the marine environment. Terry Snell, Chair of the School of Biology at the Georgia Institute of Technology, discusses his findings with host Steve Curwood.

The Mayan Long Count Calendar comes to the end of its 5125 year cycle this month. New age prophecies, based on the ancient calendar, warn the world will end when the cycle concludes. Living on Earth's Bruce Gellerman travels to the Mayan ruins of Chichen Itza to track down the truth.

Reindeer, or caribou, are in dramatic decline in the far north. Jeff Flocken of the International Fund for Wildlife explains that changing weather makes food hard to obtain for some caribou. Also indigenous communities depend on the herds for food and as a cultural touchstone. George Rich, an elder of the Innu tribe in northern Canada, tells host Steve Curwood that he doubts his tribe can survive without a healthy caribou population.

The lion is now more threatened than ever before. Lion populations have dropped sharply in the last fifty years, largely due to habitat loss and poaching. Host Steve Curwood talks with Stuart Pimm, co-author of a new lion habitat survey and Chair of Conservation Ecology at the Nicholas School of the Environment at Duke University in North Carolina.

Delegates from more than 190 nations meet in Doha, Qatar to negotiate limits on climate-changing gas emissions and funding for developing countries for adaptation. Union of Concerned Scientists’ Alden Meyer tells host Steve Curwood about progress made at this year’s talks.