CHICAGO - Scientists have been puzzling for years over why some people survive Ebola while many others perish. A new study provides strong evidence that individual genetic differences play a major role in whether people die from the disease.
WALLOPS Va./CAPE CANAVERAL Fla. - Authorities on Wednesday started investigating what caused an unmanned U.S. supply rocket to explode in a fireball moments after liftoff from a Virginia launch pad, destroying cargo and equipment bound for the International Space Station. | Video
CAPE CANAVERAL Fla. - An unmanned Atlas rocket blasted off from Cape Canaveral Air Force Station in Florida on Wednesday to deliver a Global Positioning System navigation satellite into orbit for the U.S. Air Force. | Video
WASHINGTON - Conservationists said on Tuesday they have brought giant tortoises found on the Galapagos island of Espanola back from the brink of extinction, gaining a foothold strong enough to allow humans to leave the reptiles alone.
- A skydiving Google executive is safely back on Earth after jumping out of a giant balloon floating in the stratosphere more than 25 miles (40 km) above New Mexico, a feat that broke the sound barrier and shattered a world altitude record.
- A Space Exploration Technologies Dragon cargo ship ended a monthlong stay at the International Space Station on Saturday and splashed down on schedule in the Pacific Ocean near Mexico. | Video
WASHINGTON - They lived on a remote dot of land in the middle of the Pacific, 2,300 miles (3,700 km) west of South America and 1,100 miles (1,770 km) from the closest island, erecting huge stone figures that still stare enigmatically from the hillsides.
WASHINGTON - In a bleak, treeless landscape high in the southern Peruvian Andes, bands of intrepid Ice Age people hunkered down in rudimentary dwellings and withstood frigid weather, thin air and other hardships.
LONDON - As researchers from Africa to China to America race to develop vaccines and treatments to fight Ebola, health experts are grappling with the economics of a disease that until this year had been off the drug industry's radar.
ASNIERES France - Two French entrepreneurs have launched a portable device to test for the presence of pork in food for use by Muslims who abide by dietary laws.
- A nurse who treated Ebola patients in Sierra Leone but has tested negative for the virus ventured out of her home in Maine and took a bike ride on Thursday, defying a quarantine order and setting up a legal collision with state authorities. | Video