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Maine's Atlantic puffins took a big hit this year. Chicks' survival rate plummeted after a record-setting "marine heatwave" disrupted food supplies.

Grilling usually involves burning fossil fuel. But some manufacturers are offering electric grills and citing climate change and convenience as reasons to switch.

Climate experts are trying to come up with new ways to cut emissions of greenhouse gases after the current international climate treaty expires in 2012. One proposal is to pay developing countries to stop cutting down trees. The experts are gathering in Bali, Indonesia.

"We've had time to act — and essentially we haven't acted," says science journalist Michael Lemonick. He describes the threats posed by climate change in his new book, Global Weirdness: Severe Storms, Deadly Heat Waves, Relentless Drought, Rising Seas, and the Weather of the Future.

More Americans are breathing unhealthy air, even though overall air pollution has decreased in recent decades. In the tug-of-war between air regulations and climate change, global warming is winning.

Meteorologist Eric Holthaus has made his career monitoring the Earth's climate, and he's alarmed at what he sees. After reading a new, bleak international report on climate change, Holthaus has decided one important way to reduce his carbon footprint is to give up airplane travel for good.

Climate change is transforming the Arctic, and putting indigenous communities in Alaska at risk.

It has been a common belief that low-emissions vehicles, like hybrids and electric cars, are more expensive than other choices. But researchers at MIT have found otherwise.

Kernza is seed grain scientists have been selectively breeding, hoping to develop into a food crop that's more climate friendly than wheat and corn. Liquor distillers are interested.

U.S. climate envoy John Kerry is visiting China to re-establish climate change discussions between the world's two biggest economies.