Yvo de Boer, the Executive Secretary for the United Nations Framework Convention on Climate Change, has announced his resignation. Host Jeff Young talks with Bill Hare of the Potsdam Institute for Climate Impact Research about what this change in leadership will mean for climate negotiations.

The California red-legged frogs miraculously survived fires that burned the hills outside of Los Angeles for five weeks last fall. But scientists now fear the threatened species may not have escaped from the recent heavy rains and mudslides. Producer Ashley Ahearn heads to the Angeles National Forest with a team of ecologists to search for the red-legged frogs.

Many listeners were curious about the impacts of feeding chicken to fish in a recent aquaculture story. Living on Earth’s Bridget Macdonald dredges up some answers on the real chicken of the sea.

Read-your-grandma's-chicken-recipe filibusters no longer hold the Senate floor, but their threat routinely holds up plans to legislate ambitious action on problems like climate change. Lawyer Tom Geoghegan is a self-described contrarian. He tells host Jeff Young that the 60-vote supermajority required to stop a filibuster is undemocratic and bad for the planet.

Researchers believe that better body and vehicle armor could be modeled on the shell of the scaly-foot snail, a tiny gastropod that lives on the floor of the Indian Ocean. Emily Guerin reports.

Each year, wild fish are caught by the thousands and turned into fishmeal to feed farmed fish. But wild fish populations are already stressed as the culinary demand for fish is on the rise, so researchers are looking for a fishmeal substitute. Host Jeff Young talks with Dr. Rick Barrows, a USDA fish physiologist about a promising alternative.

Pika, an alpine cousin to the rabbit, are disappearing from parts of the Western United States, but the U.S. Fish and Wildlife Service declined to list the animal on the endangered species list. Host Jeff Young talks to Vermont Law School Professor Pat Parenteau about what this decision says about the Obama administration and endangered species protection.

Scientists have long been intrigued by mimicry. Mimics adopt other animals’ colors to ward off predators, or take on the color and shape of their surroundings to avoid being seen. Artists have also noticed animals’ impressive disguises. Peter Forbes, author of the new book, Dazzled and Deceived: Mimicry and Camouflage, tells host Jeff Young how both artists and scientists tried to convince British military officials to adopt camouflage by disguising armies and battleships with tried and true methods from the natural world.

Manaus, Brazil is a city of two million people completely surrounded by the Amazon rainforest. Living on Earth’s Bobby Bascomb reports on a species of monkey found nowhere else in the world who are making themselves at home in the urban jungle.