New photos of an "uncontacted" Amazon tribe are stirring debate. Should isolated peoples be contacted? And are they truly uncontacted in the first place? With video.

Spacewalkers and robot arms attached the "Lexus" of space labs to the International Space Station and prepared for new challanges, including balky plumbing.

Moonlets within one of the planet's most bizarre rings may occasionally collide with other large ring particles on a near-daily basis, new digital images show.

Possibly mutilated skeletons from a 4,000-year old site could overturn an ancient period's reputation, an archaeologist says.

Mexico's iconic flatbreads have become a rallying cry for needy Mexicans angry at the country's biofuels and trade policies. Part of Global Food Crisis: A Special News Series.

Watch spacewalking astronauts and robot arms remove a bus-size Japanese lab from the shuttle Discovery and attach the module to the International Space Station.

A headless skeleton and disembodied pairs of legs are among possible evidence of ritualized killing at the 4,000-year-old settlement?despite their period's peaceful reputation.

Plant-covered roofs may seem like cutting edge eco-architecture. But the practice is an old tradition on the remote Faroe Islands.