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NPR's Michel Martin speaks with John Kerry, former secretary of state and Biden-era climate envoy, about the 2025 UN Ocean Conference in Nice, France.

Environmental factors may be leading to a population decline in fireflies.

These devices expose users to higher levels of toxic metals like lead than previous e-cigarettes and regular cigarettes.

As searchers continue to look for victims in the deadly flash flooding in Texas, officials are answering questions about the weather forecasts ahead of and during the storm.

We created three fictional families of varying income levels. Economists ran the numbers to see how they'll fare under President Trump's new domestic policy law.

There are questions about what preparations and warnings were in place in the rural central Texas area devastated by deadly flash flooding this weekend.

President Trump this week has been firing off letters to global leaders that threaten new, high tariff rates and also announcing them via social media. Here's what has happened so far.

Health officials warn people to limit time outdoors due to fine particle pollution.

The venture, privately funded to start, is now run by the University of Arizona. And today, scientists there are quietly plugging away at research they hope will help us all adapt to the Biosphere 1 — that is Earth, and the climate change we are causing to it.

California, which has the unique ability to set vehicle standards, has set ambitious rules requiring all new cars to be zero-emission by 2035. The fate of those rules is now up to the Senate.