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Last May, German investigators found secret files embedded in a pornographic video on memory cards being carried by a suspected al Qaeda operative. Peter Wayner describes the history and technology of the technique for hiding information, known as steganography.

A video showing an officer methodically spraying pepper spray in the faces of seated protesters has created an uproar. While some say the incident represents a wider problem with the way police confront protesters, Santa Clara University professor Marc Bousquet argues that misses the point.

NPR's Mary Louise Kelly talks to Americana artist Lucinda Williams about her new album Good Souls Better Angels and the spirit of protest that she says has "always been in my blood."

President Trump says he's considering restricting some domestic travel. Florida orders residents to stay at home. And, the coronavirus nearly bumps the presidential campaign from news headlines.

A mass shooting there this spring that left 12 dead has put the issue into sharp focus. Democrats — bolstered by large cash infusions from gun control groups — hope to turn the state legislature blue.

The president had Thanksgiving with troops in Afghanistan, and also signed a law that could sanction China for human rights violations in the Hong Kong protests. And an ICE sting leads to 250 arrests.

Tiera Fletcher, rocket scientist who obviously knows space is her jam, answers three questions about the movie Space Jam.

Eleven months into the COVID-19 crisis, an unimaginable death toll has been reached. NPR spoke to doctors, nurses and the bereaved about how they face loss every day.

Gulalai Ismail spoke out against sexual assaults committed by Pakistani security forces. She was detained and threatened. Then she disappeared — until last week.

Tension between Capitol Hill and the White House is threatening the GOP's legislative agenda. Far-right groups have set their sights on San Francisco and Berkeley for weekend rallies.