Leading field biologist George Schaller talks about his 30 years spent exploring in the most remote stretches of Tibet: the wide, sweeping rangelands of the Chang Tang and the canyons and ravines of the southeastern forests. In Tibet Wild he tells how more roads, homes, and grazing livestock, and are increasingly causing clashes between the wildlife and people. He works with local communities, regional leaders, and national governments to protect the unique ecological richness and culture of the Tibetan Plateau.

ProPublica reporter Abrahm Lustgarden talks about Mexico City's plans to tap a mile-deep aquifer for drinking water, raising new questions about existing U.S. policy that allows water that’s deep underground to be intentionally polluted.

On January 1, California launched its cap and trade program, and it  was recently upheld in a court ruling. Time magazine Senior Editor Bryan Walsh discusses the program and why the country's most populous state is tackling climate change.

Fabien Cousteau, a filmmaker, oceanographic explorer and grandson of Jacques Cousteau, and marine toxicologist Susan Shaw talk about the health of the oceans and conservation. Susan dove into the BP oil slick in May 2010 to assess the impact of oil and the chemical dispersants used to clean the spill, which had a devastating impact on marine life in the Gulf and human health.

More than a hundred Brooklyn residents and business owners attended a public meeting organized by the Environmental Protection Agency to address the proposed Superfund cleanup of the Gowanus Canal.

As President Obama moves into his second term, his policy priorities, and the policies themselves, will likely shift. Coral Davenport, energy and environment correspondent for the National Journal, explores the Obama Administration's priorities on climate change, and Elisabeth Bumiller, Pentagon correspondent for Takeaway partner The New York Times, discusses the Administration's policy shifts in Afghanistan.

Mother Jones political blogger Kevin Drum discusses what may be the hidden villain behind rampant crime, lower IQs, and even the ADHD epidemic: tetraethyl lead. In his article "Criminal Element," he postulates that lead in gasoline may account for 90 percent of the fluctuations in violent crime over the last 50 years, and he shows the upside to investing in lead abatement. The article appears in the January/February issue of the magazine.

William Hewitt, environmental activist and the author of A Newer World: Politics, Money, Technology, and What's Really Being Done to Solve the Climate Crisis, looks for reasons to be optimistic about climate change fixes.

Kate Orff, an assistant professor at Columbia University and founder of SCAPE, a landscape architecture studio in Manhattan, discusses the causes of sustained environmental abuse along the largest river system in North America. The book Petrochemical America combines Richard Misrach's photographs of Louisiana's "Chemical Corridor" with Orff's "Ecological Atlas"—a series of speculative drawings developed through intensive research and mapping of data from the region

William Bryant Logan takes a close look at the air that surrounds us—what it is and what it does. In Air: The Restless Shaper of the World is an examination of the air we breathe, from the pure to the polluted.

It was the warmest year on record and brought a series of extreme weather events, from wildfires and floods to drought and a devastating derecho. Polls show a big jump this year in the number of people connecting such disasters with climate change.

Bad weather was making its way across the eastern part of the U.S. on a busy post-Christmas travel day. Hundreds of flights were canceled and roads were treacherous in many East Coast and Midwestern states.

Elizabeth Royte, a contributing reporter for the Food & Environment Reporting Network, talks about the potential impact of fracking on our food supply. Her article “Fracking Our Food Supply” appears in the December 17th issue of The Nation magazine, and it is the first in-depth look at the topic, and how cattle are allegedly falling ill and dying when exposed to fracking fluids across the Midwest.

In the wake of Superstorm Sandy, New Yorkers, local politicians and scientists face a tough decision: How to spend limited funds to defend themselves in a world where climate change is making flooding from coastal storms ever more likely.

Red snapper, wild salmon, and other fish sold in some outlets were other, cheaper species, according to DNA tests done by an ocean conservation group. The report is just the latest in a string of investigations revealing that seafood mislabeling is commonplace.

Diplomats in Doha, Qatar, are working late into the night to hammer out a deal in the 18th round of U.N. climate talks. Expectations are low as the talks are part of a multiyear process to make a transition from the fading Kyoto climate treaty to something that engages all nations of the world.

Climate change never found its way into the 2012 presidential campaign, but college students across dozens of campuses have launched a campaign of their own. Their goal is to divest university endowments of holdings in fossil fuel companies.

Delegates from around the world are in Doha this week for UN talks on climate change. With the Kyoto Protocol set to expire this year, countries will discuss plans for a new climate deal to begin in 2015, but there are already fears that talks may be derailed over a dispute regarding funding. Roger Harrabin is the BBC's environment correspondent, and he says the lack of political engagement is also hurting the chances of a successful climate change deal in Doha. 

Lessons Learned from the Oslo Accords | With Little Fanfare, UN Climate Talks Underway in Doha | Students Fight for Colleges to Drop Fossil Fuel Holdings | Scandals, State Dinners, and the Real Story Behind 'Hyde Park on Hudson' | The Black Sheep of the Family