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To get so close, the Parker Solar Probe had to withstand the sun's extreme heat and radiation like no spacecraft before it.

Bacteria coordinate attacks using their own chemical language. What if we could decode these messages and thwart their plans? Fatima AlZahra'a Alatraktchi invented a tool to spy on bacterial chatter.

A NASA simulation accidentally aired on the space agency's livestream. NASA said all crew members are healthy, safe and preparing for a spacewalk scheduled for Thursday.

NPR's Ailsa Chang talks with Elizabeth Tsurkov of the New Lines Institute for Strategy and Foreign Policy about Russia's new top commander in Ukraine, Gen. Dvornikov, who is notoriously ruthless.

"We are back in the business of stealing secrets," says CIA chief Mike Pompeo, who made the comment Tuesday night in a session at CIA headquarters in northern Virginia. We examine what he meant.

Scott Jennings, a political consultant and former GOP administration official, says that House Speaker Paul Ryan's retirement suggests to Republicans they should focus on holding on to the Senate.

A potential trip by House Speaker Nancy Pelosi to Taiwan has increased tensions between the U.S. and China. Meanwhile, growth in the world's second largest economy is not meeting expectations.

Evan Gershkovich was arrested for what Russia's main security agency described as espionage.

After going quiet on bird flu, CDC scientists have published a report on its spread among veterinarians. The findings suggest a need for better surveillance.

Largest study to date finds women who have abnormal mammograms but negative results from further tests have a somewhat higher risk of developing breast cancer during the next 10 years.