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NPR's Mary Louise Kelly speaks with Tim Podlogar, who researches exercise metabolism, about how elite cyclists consume thousands of calories each day to compete in the Tour de France.

President Volodymyr Zelenskyy says he will heed protesters angry about his new anti-corruption policy.

Why are some songbirds so brightly colored? A new study finds that a hidden layer of black and white feathers help their colors pop.

The International Court of Justice ruled that nations have an obligation to act on climate change under international laws protecting the environment and human rights.

Six months into his second stint at the White House, President Trump has used his power to fundamentally reshape immigration in America with an ongoing, aggressive crackdown on people in the country illegally.

Searches: Selfhood in the Digital Age is about how tech is helping and exploiting us. Vauhini Vara analyzed the feedback AI gave her to explore the abilities, shortcomings and biases of the chatbot.

CEO of Roblox Corporation David Baszucki says his company rolled out new security features to protect kids from predators, after a series of high-profile abuse cases.

President Trump says he wants to make sure the United States leads the artificial intelligence race. The White House says fewer regulations would help.

Black storytellers from around the country are convening in Wilmington for a Black Storytelling Residency, with a free event highlighting their work on Saturday.

The anti-corruption agencies were created after pro-democracy protests in 2013. Ukrainian President Zelenskyy claims corruption cases take too long and suggested the agencies were compromised.