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NPR's Melissa Block speaks with Pieter Tans of the National Oceanic and Atmospheric Administration's Earth System Research Laboratory about greenhouse gas emissions surpassing 400 parts per million.

The climate activist responded like the social media-savvy teenager she is, with a sly change to her Twitter profile.

Space is the best place — maybe the only place — to get a complete picture of how climate change is affecting the Earth's oceans. And what happens in the ocean does not stay in the ocean.

People speak very differently depending on where they live, and the climate and environment might have something to do with that. Crisp English consonants don't carry well in the rain forest.

Countries around the world have agreed to limit the type of greenhouse gases known as hydrofluorocarbons. Andrew Light of the World Resources Institute talks about what it means for climate change.

Producers and consumers in southwestern Alaska see one upside to climate change. It's now possible to farm in parts of the tundra where agriculture was unheard of just a few years ago.

General Motors announced a goal of phasing out gas-powered vehicles by 2035. It's part of an industry-wide — and potentially economy-wide — transformation in order to fight climate change.

Climate change is threatening the homeland of the Aquinnah Wampanoag tribe off the coast of Massachusetts. Volunteers are planting beach grass to make it more resilient.

The U.S. needs a lot more renewable energy to rein in climate change. But much of the opposition to larger solar projects is coming from local environmentalists and conservationists themselves.

Over the 20th century, America's "growing season," a proxy for warmer temperatures, has been getting longer. And scientists say the trend is exactly what they expect to see as greenhouse gases in the atmosphere increase.