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NASA's probe to Jupiter must fire its main engine to be captured by the giant planet's gravity. If the rocket doesn't fire, it's mission over. NPR's Ari Shapiro speaks with science correspondent Joe Palca from Pasadena.

Two monkeys with spinal cord injuries were able to move after a wireless implant restored the connection between brain and legs. But any help for people will be years away, researchers say.

At the Supreme Court on Wednesday, all the justices who spoke signaled they have a problem with a lawyer who disregards his client's explicit instructions and concedes his client's guilt to the jury.

The State Department has put on hold $200 million in recovery funds to Syria, following President Trump's remarks last week signaling a possible withdrawal of U.S. troops from Syria.

The Polish government is asking the U.S. to open a military base in Poland as a counter balance to Russia. They've offered the U.S. up to $2 billion, as well as a promise to call it "Fort Trump."

Stefan Zweig's famous book is as much about its own context as an execution 300 years ago; its archness signals a time capsule, except that the rhetoric around women in power has changed so little.

The electric car company Tesla is now becoming the self-driving carmaker. Today it releases software to tens of thousands of Model S owners to automate steering, lane change and parallel parking.

A neurologist's unorthodox thinking led to an experimental drug that allows trapped nerve fibers to grow again. And that growth helps amplify signals that restored movement in laboratory rats.

By rushing live brain cells from the operating room to the lab, scientists have been able to create three-dimensional reconstructions of cells that reveal their electrical behavior and shape.

Sound travels differently through open fields than the woods. When deer eat up bushes, small trees and other forest plants, it affects the transmission of bird calls and other natural sounds.