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Aiming to find a cheaper, easier way than IVF to ensure human embryos are healthy before implantation, researchers paid women to be inseminated, then flushed the embryos from their wombs for analysis.

Forty mice spent more than a month in orbit to test two approaches to strengthening muscle and bone in microgravity conditions. The results could help people with muscle and bone diseases.

Nearly a third of Iowa's 99 counties swung from voting for Democrat Barack Obama in 2008 and 2012 to Republican Donald Trump in 2016. Howard County saw the biggest swing.

Phase 1 of the deal relaxes some of the U.S. tariffs on Chinese imports. In exchange, China has agreed to buy more American products while making some changes in its own economy.

The president urged public schools to remember that students have constitutional rights to prayer — but one group says too many schools are promoting prayer in ways that cross the line.

Some wolf puppies will unexpectedly play "fetch," researchers say, showing that an urge to retrieve a ball might be an ancient wolf trait and not a result of dog domestication.

Ukraine's Internal Affairs Ministry says it's asking the FBI to help determine whether international laws were broken, or "whether it is just a bravado and a fake information" from a U.S. politician.

In this set, West Virginia singer-songwriter Andrew Adkins didn't take long to flex his bluegrass muscles. His music has always comfortably saddled a line between traditionalist and progressive.

Sepsis, or blood poisoning, arises when the body overreacts to an infection. An analysis finds that it may be involved in 20% of deaths worldwide, twice the proportion previously estimated.

Amid difficult questions about the steps taken by Boeing and regulators, the review commissioned by the Department of Transportation largely validated the process that put the jetliner in the air.