Environment

The governor of Puerto Rico had closed schools and public buildings as a precaution against another devastating storm.

Swedish teenager Greta Thunberg delivered a speech at the United Nations Climate Action Summit calling on world leaders to act to address climate change.

Cities, states and federal governments are suing oil companies, alleging they're financially responsible for damaging effects of climate change. It could help with costs of adapting to a hotter Earth.

There are fewer than 80 Florida grasshopper sparrows left in the wild. As researchers release more into the wild, there's a fight brewing about whether that's the best plan to save them.

"You have stolen my dreams, and my childhood, with your empty words. And yet I'm one of the lucky ones," activist Greta Thunberg, 16, tells world leaders.

As temperatures rise, voters are making the climate a central issue in this presidential campaign.

Climate activists are about to royally mess up Washingtonians' commutes.

President Trump defends his call to Ukraine's president. Iran's foreign minister says his country had nothing to do with strikes on Saudi oil facilities. And, climate action summit seeks bold ideas.

On Sunday, more than 200 people paid their respects at a ceremony to mark the "death" of the glacier in the Swiss Alps. Researchers say it's disappearing due to rising temperatures.

NPR's Melissa Block speaks with two U.N. Climate Change Summit attendees: Lisa Helps and Minal Pathak. The summit begins Monday.

NPR's Scott Simon talks to former U.N. climate negotiator Christiana Figueres about Monday's Climate Action Summit in New York City. It coincides with the United Nations General Assembly.