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A decrease in PSA testing came after a controversial recommendation against routine screening. As a result, many fewer cases of the most common cancer to hit men are being diagnosed, research finds.

At Fish 2.0, entrepreneurs get the chance to sell their ideas for modernizing the industry to a roomful of investors and venture capitalists. It's kind of like TV's Shark Tank — for the fish world.

House Speaker Paul Ryan calls for a "pause" on America's Syrian refugee program, to give Congress time to evaluate the national security risks.

Evans Wadongo of Kenya believes that the world pays more heed to terrorist victims in Europe than in Africa, but he hopes attitudes can change.

After years of struggling for donations, aid groups were seeing record responses. Then came Paris.

Nicaragua, a leftist ally of Cuba, is blocking some 2,000 Cubans from entering. The Cubans, stuck in Costa Rica, want to go to the U.S. and fear warming U.S.-Cuban ties may close the door.

Sensors that work inside the body are gaining new skills. The latest version can track heart rate and respiratory rate, as well as temperature, as it travels through the digestive system.

The mosquito-borne virus is not fatal. But there's concern about a link to a severe birth defect in babies born to infected mothers.

Abdelhamid Abaaoud, 28, who had boasted of mounting ISIS attacks, has been confirmed dead in Wednesday's police raid in a suburb north of Paris, according to the Paris prosecutor's office.

The suspected organizer of the attacks was confirmed to be among those killed in a police raid in a suburb of the French capital. The attacks add to worries that extremists are among the migrants.