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Kelp forests along Northern California have almost vanished. Divers and scientists are racing to stop purple sea urchins from taking over critical habitat.

Carbon offset markets pay landowners for storing carbon, by letting their trees grow old. They're increasingly popular with companies pledging to go carbon neutral and more are operating in the Northeast.In recent years, some scientists have raised concerns about whether they actually cut emissions, and if managing for old trees alone will make northeastern forests resilient to climate change. A new program aims to fix some of those problems.

Indigenous nations across the U.S. lost nearly 99% of their historical land base over time, new research shows. What little land they have left is especially vulnerable to climate change risks.

What words will be buzzing about in the global health and development hive in the year ahead? Our experts have nominations for your consideration.

Punishing heat waves have gripped America, Asia and Europe this July. A new study finds human-caused climate change is a major reason why.

President Biden faces pressure to end fossil fuel development on federal land to fight climate change. But industry expects new drilling opportunities, putting his public lands chief in a tight spot.

The European Union will tax certain imports based on the amount of carbon dioxide companies emit making them. Experts say the move could lead other major economies to do the same.

NPR's Ari Shapiro speaks with U.S. Transportation Secretary Pete Buttigieg from COP26, as world leaders release a draft of their goals to cut emissions and avert disastrous climate change.

The U.S. has become a "side character" in the global story of renewable energy, experts say. China dominates the sector, with positive implications for the climate and their economy.

United Nations Deputy Secretary-General Jan Eliasson reflects on his time in office and shares his concerns about the incoming Trump administration and the anti-globalism movement elsewhere.