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The insects were created, using CRISPR, to carry a powerful "gene drive." The mosquitoes could provide a potent weapon against malaria, but they raise fears about unpredictable environmental effects.

A genetic test of breast cancer tumors helped identify women whose survival odds would not be greatly improved by chemotherapy. But that test isn't as precise as women and doctors might like.

Vladimir Putin wanted a mandate to govern, and got it, with 76 percent of the vote. He will use the next six years to advance his mission: cementing Russia's role as a major player on the world stage.

Emergency room doctors are just beginning to study a new kind of casualty in the opioid epidemic — patients who survive an overdose, but walk away with brain damage, kidney failure or dead muscle.

More than 3 million people this year watched flat track motorcycle racing, thanks in large part to two unlikely characters.

The Girl's Trip actress has had what seems like a meteoric rise over the last year: a blockbuster movie, a gig hosting Saturday Night Live, and now a new memoir, The Last Black Unicorn.

After years of devastating civil war and broken peace deals, South Sudan is at a crossroads again. While many displaced refugees are still afraid to return home, others see big reasons for hope.

"The people whom I serve believe that the means by which I came to office corrupt me. That shames me," the senator said in 1999

For decades, a legendary sandwich shop in the Syrian city was a pilgrimage site for locals and visitors. Could it have survived the civil war? It would mean some part of Aleppo is still there, too.

In 2006, police sexually abused and beat women following a confrontation between protesters and state forces. Eleven years later, the Women of Atenco have taken the case to an international court.