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Much of our ancestral histories can be found in our bones. Archaeologist Carolyn Freiwald traces the story of human migration through the hidden clues in our bones and our teeth.

The Centers for Disease Control and Prevention released preliminary data on Wednesday showing the number of births in the U.S. has dropped to the lowest level since 1979.

Italy has approved plans to install a new floor for the Colosseum, the ancient arena in Rome. The new floor will give visitors the view gladiators once had.

President Biden threw his support behind a World Trade Organization proposal that would waive intellectual property protections for COVID-19 vaccines — allowing countries to make their own vaccines.

A new study shows how much and how fast nearly every glacier is melting. NPR's Rachel Martin talks to Bob McNabb, one of the study's authors, about what this means for the future.

About once a week, Manuel Vera hangs out in Silver Spring, Md., with a sign that reads "free bikes." The Washington Post reports he has given away 40 repaired bikes since November.

Dr. Sumit Ray, critical care chief at a New Delhi hospital, is on the front lines of India's growing COVID-19 crisis. "As a system in different parts of the country, we have collapsed," he says.

Biden supports waiving intellectual property rights for COVID-19 vaccines. Judge strikes down federal eviction moratorium. Scottish voters cast ballots in an election that could lead to independence.

The No. 3 House Republican has previously warded off an attempt to remove her from her leadership role in the party, but this time around, her support from GOP leaders seems to be crumbling.

Tennessee could owe a historically Black university over $500 million. Andre Perry, senior fellow at the Brookings Institution, believes the problem cuts much deeper: "We're throttling the economy."