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For decades, Russia and other nations collaborated on scientific and environmental issues in the Arctic. Now, there's concern that Finland and Sweden joining NATO could spark a military buildup there.

New York Times reporter Lisa Friedman talks with Melissa Block about EPA administrator Scott Pruitt's latest moves to curb his agency's regulations and shift the focus away from climate change.

Russia's invasion of Ukraine is giving Ukrainian scientists and climate negotiators a big stage at the U.N. climate conference in Egypt.

The United Nations wants to finish a plastics treaty by the end of 2024. Almost every piece of plastic is made from fossil fuels, and the industry wants a big say in how it's cleaned up.

So far, strikes on Iran's facilities have created limited chemical and radiological hazards. Experts say that's not likely to change even if the U.S. uses a big bomb.

NPR's A Martinez speaks to Superintendent Alberto Carvalho about the challenges facing schools amid the omicron surge. Carvalho talks about his goals for the nation's second largest school district.

Gasoline prices have fallen more than 20 percent. And natural gas is selling for less than half what it cost a year ago. But that doesn't mean everyone is benefitting equally from the abrupt reversal.

Texas is one of 24 states driving the lawsuit against Obama's climate change initiative. But some of the state's energy companies transitioning toward cleaner sources support the new regulations.

Bats are able to consume an extraordinary amount of sugar with no ill effects. Scientists are trying to learn more about how bats do it — and whether humans can learn from their sugar response.

Punxsutawney Phil predicts more winter ahead. Groundhogs may not have a great track record when it comes to weather forecasts, but experts say the tradition sheds light on our culture and environment.