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Farmers in a remote Ugandan tropical forest suffered from an excruciatingly painful foot ailment. Usually parasitic worms are the cause — but not this time.

The reef structure covers more than 2,000 square miles north of the Great Barrier Reef. What might live there and even what it looks like up close, is still largely a mystery.

Urban farming goes vertical, as Singapore opens a 30-feet tall greenhouse for bok choy and cabbage. The farm is already producing half a ton of veggies per day for local supermarkets. But are these vertical "farmscrapers" any more efficient than traditional, flat greenhouses?

FEMA releases new federal advisories and recommendations about which areas of New Orleans are vulnerable to flooding in the future. The advisories will require that many houses be raised several feet to qualify for insurance. Residents plan to use the guide to decide whether to rebuild or relocate.

The news came hours after the announcement that debris from the Titan, collected from the seafloor more than 12,000 feet below the surface of the North Atlantic, had arrived in Newfoundland.

A Delta passenger plane and an Air Force jet flew narrowly close to one another outside Washington, D.C., on Friday, prompting a collision warning and "corrective instructions" from air traffic controllers.

The organization of certain brain cells in children with autism seems already different from that of typical children by the sixth or seventh month of fetal development, a study hints.

Las Vegas is adding an eye-catching tourist attraction, in the form of a huge wheel that can take more than 1,000 people on a ride 550 feet into the sky over the city's famed Strip. The main construction of the wheel, called the High Roller, is nearly finished; it is expected to open in early 2014.

Mo'ne Davis has dazzled at this year's World Series. The 13-year-old pitching sensation is already throwing in the 70s, as in miles per hour. Some believe she could be an elite pitcher.

An intimate look at cancer from a doctor deep in the trenches. The soulful memoir is called "Cancerland."