MOJAVE Calif. - A passenger spaceship being developed by Richard Branson’s Virgin Galactic company crashed during a test flight on Friday near the Mojave Air and Space Port in California, killing one pilot and seriously injuring the other, officials said. | Video
CAPE CANAVERAL Fla. - As Orbital Sciences picks up the pieces, literally and figuratively, after its high-profile rocket launch explosion, accident investigators are looking closely at a potential first-stage engine problem.
CAPE CANAVERAL Fla - Heeding a lesson from history, designers of a new generation of U.S. rockets will include escape systems to give crew members a fighting chance of surviving launch accidents such as the one that felled an unmanned Orbital Sciences Antares rocket on Tuesday.
WASHINGTON - The crash of an unmanned Orbital Sciences Antares rocket is a "wake-up call" to the U.S. space community about the need to develop a new U.S. rocket engine, the head of Boeing Co's defense division said on Thursday.
- A gray wolf was recently photographed on the north rim of the Grand Canyon in Arizona in what would be the first wolf sighting in the national park since the last one was killed there in the 1940s, conservation groups said on Thursday.
WASHINGTON - A skin-eating fungus that infiltrated Europe through the global wildlife trade is threatening to inflict massive losses on the continent's native salamanders including extinction of whole species and could do the same in North America, scientists say.
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.
FORT KENT Maine - A Maine judge ruled on Friday that a U.S. nurse who treated victims of Ebola in West Africa does not need to be confined to her home, declaring Ebola fears in the United States "not entirely rational." | Video