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Early in life, the protein Reelin helps assemble the brain. Later on, it appears to protect the organ from Alzheimer's and other threats to memory and thinking.

OceanGate's Titan submersible imploded on its way to the Titanic wreck one year ago. The Coast Guard initially had 12 months to complete its investigation, but says it needs more time.

Yemen's Southern Transitional Council and its institutions will be dismantled after weeks of unrest in southern areas and a day after its leader fled to the United Arab Emirates.

Jimmy Kimmel's return to airwaves might just point the way forward for late-night TV to prove its relevance to American audiences — and to itself.

Iran's supreme leader signaled Friday that security forces would crack down on protesters after they screamed from windows and marched through the streets overnight, directly challenging U.S. President Trump's pledge to support those peacefully demonstrating.

Photographer Tyrone Turner documented the life and changes on Cat Island in the southeastern coastal area of the state before it disappeared.

Car traffic took a big dip beginning in late March, and headlines celebrated clean air around the U.S. But an NPR analysis of EPA data tells a more troubling story.

Photographer Andria Hautamaki is used to limited connectivity, living on an off-grid ranch in Chilean Patagonia. Now, her access to the Internet and other humans is further reduced.

An NPR investigation shows that black and Latino neighborhoods in four large Texas cities have fewer coronavirus testing sites, leaving communities blind to potential COVID-19 outbreaks.

The Arab Spring uprising led to a transition to democracy in Tunisia, but young people decry widespread corruption and a lack of job opportunities. It's led to protests, including self-immolation.