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New Brain Sensor Lets Amputees Move Robotic Limbs

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Robert Siegel speaks with Dr. Leigh Hochberg, neurologist and engineer at Brown University and the VA Medical Center in Providence, R.I. Hochberg is the lead author of a new study that looks at how paralyzed people are able to move robotic arms with their thoughts, due to a microchip that is implanted in their brains that sends neural signals to a computer.

ABC Celebrates 50th Anniversary Of 'A Charlie Brown Christmas'

ABC will air "It's Your 50th Christmas Charlie Brown" Monday night. On the classic Christmas cartoon's golden anniversary, NPR explores what makes this ageless special endure.

When Tipping Was Considered Deeply Un-American

Imported from Europe, the custom of leaving gratuities began spreading in the U.S. post-Civil War. It was loathed as a master-serf custom that degraded America's democratic, anti-aristocratic ethic.

Abortion Providers Raise Security Concerns After Planned Parenthood Shooting

NPR's Kelly McEvers talks to Dr. Diane Horvath-Cosper about how performing abortions has made her a target for anti-abortion groups. She is an OB-GYN and family planning fellow in Washington, D.C.

Big Data Predicts Centuries Of Harm If Climate Warming Goes Unchecked

How can climate scientists be so sure about what will happen decades and centuries from now? About 30 teams using supercomputers to churn through mountains of data see patterns aligning.

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