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While genetic mutations are nearly ubiquitous in cancer, they may not always be the driving force for disease, some researchers say. They suggest looking at disruptions in cellular metabolism.

Spring is for the birds. And some are pretty odd. There's a bird that walks under water and another that impales its prey. NPR's Lourdes Garcia-Navarro speaks with Ray Brown from "Talkin' Birds."

Engineers warn that the Mosul dam in Iraq could collapse at any time, threatening 1.5 million people. Needed repairs on the poorly built structure haven't been carried out since ISIS held it.

The GOP establishment wants to bring Donald Trump down. Donors are going on the attack. NPR's Lourdes Garcia-Navarro discusses the strategy and the money with Domenico Montanaro and Peter Overby.

After years of decline, the numbers of Monarch butterflies are up. NPR's Lourdes Garcia-Navarro speaks with Jorge Rickards of the World Wildlife Fund in Mexico about their promising rebound.

The Conservative Political Action Conference — CPAC — is meeting in Washington. But Donald Trump won't be there. NPR's Lourdes Garcia-Navarro discusses the race with Sarah McCammon.

Cooperation is rare these days between Washington and Moscow. But the U.S. Embassy handed over 28 historical documents that had disappeared in the tumultuous years following the Soviet breakup.

Iranians are hoping the recent election of more reformers to parliament will help improve the economy.

A bomber detonated a truck full of explosives south of Baghdad, NPR's Alison Meuse reports. At least 45 people are dead.

Research from the Dartmouth Atlas Project identifies care that older people receive that doesn't match clinical guidelines or, often, patients' own preferences.