Science

The international humanitarian group says the World Health Organization is restricting access to the vaccine in the Democratic Republic of Congo, where the current outbreak has killed more than 2,100.

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

Never mind a runner's high — the buzz some people say they get after a run. Neuroscientist Benedict Kolber was more interested in how to generate pain relief via a brisk walk. It can really work.

World leaders are meeting in New York on Monday amid growing fear that promises countries have made to reduce emissions are insufficient to avoid the most catastrophic effects of climate change.

Nalini Nadkarni was one of the first people to study the canopy — the part of trees just above the forest floor to the top branches. Her discoveries have helped shape our understanding of forests.

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

NPR's Audie Cornish speaks with EPA Administrator Andrew Wheeler about the administration's plans to revoke California's authority to set its own vehicle emissions standards.

Instead of paying doctors piecemeal for prenatal appointments and delivery of the baby, some insurers now offer medical practices one lump sum to cover it all.

A group of scientists is embarking on a bold plan to better understand an extremely understudied part of the rapidly warming Arctic — the central Arctic Ocean.

Researchers estimate that the bird population has fallen by a quarter since 1970. More than 90% of the loss can be attributed to just a dozen bird families, including sparrows, blackbirds and finches.