– Climate change brought on by land use decisions may have contributed to the collapse of Mayan society in the ninth century.

– Might a penguin’s next meal be affected by the exhaust from your tailpipe?

– The National Center for Science Education — a group dedicated to fighting the teaching of creationism in public schools — is expanding its mission in response to attacks on the teaching of climate science.

– Rising carbon dioxide emissions may be affecting the brains and central nervous system of sea fishes with serious consequences for their survival.

– Analysis of global temperatures shows that the year was the 9th hottest in the past 130 years. Nine of the ten warmest years have occurred since 2000.

– President Obama announced Wednesday that he was rejecting a Canadian firm’s application for a permit to build and operate the Keystone XL pipeline.

– Over the past forty years, shrubs have invaded the Siberian tundra, a sign that the Arctic is fundamentally changing as temperatures warm.

– Reducing emissions of black carbon and methane could slow climate change, increase crop yields and prevent hundreds of thousands of premature deaths each year.

– As the world continues to warm, some traditional winemaking regions scramble to adapt, while others see themselves as new wine frontiers.

– Siberia could hold clues as to how ecosystems will adapt to future climate change.