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Modern genomes from Nigeria and Sierra Leone show signals that scientists call "ghost" DNA — from an unknown human ancestor. That means that prehistoric humans likely procreated with an unknown group.

President Trump wants the Federal Reserve to keep cutting interest rates. But the central bank has signaled it's done cutting rates for now, unless the economy takes a turn for the worse.

The Havasupai Tribe's reservation, located at the bottom of the Grand Canyon, is finally getting broadband access. Tribal members say it will improve education, health care and economic development.

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.

Iraq's new prime minister is trying to signal that Baghdad is safer than it once was, by dismantling walls around the Green Zone government district. But the country still faces considerable danger.

A legal showdown is brewing between President Trump and the man leading the probe into Russian election interference. Special counsel Robert Mueller has signaled he wants to talk with the president.

All Trump has to do is let John Kelly take over, end the White House wars, focus on a unified agenda, repair relations with Congress and send a global signal to friends and adversaries alike.

The opening of Spoleto Festival USA this year was unlike any other. Instead of a seated crowd fanning themselves in the blistering sun before city hall, a small group gathered in the shade of Washington Park.The mayor proclaimed the festival’s start as he typically does. But the confetti and church bells that followed were a surprise for many, even though they are an opening tradition.“To me there’s something emotional about that because it really does signal the start of the festival,” Jessie Bagley said. She is the Spoleto Festival USA Marketing and Public Relations Director.Bagley credits the festival’s Director of Production, Mike East, with making the unexpected happen. He just smiles when asked, humbly hanging his head and shaking it no.

Debbie Elliott speaks with Diego Area, deputy director of strategic development at the Atlantic Council, about relations between the U.S. and Venezuela and the implications of renewed diplomacy.

TV historian David Bianculli worries that the death of analog television isn't politically neutral: It threatens to leave the neediest viewers in the Dark Ages.