Could the Unabomber and Chicago's Tylenol poisoner be one and the same? FBI agents investigating the Tylenol killings, unsolved for nearly 30 years, want Ted Kaczynski's DNA, but they aren't saying whether there's any reason to believe he might be a match.
Australian scientist on Thursday said dark energy is real and causing space-time and the universe to expand.
Andrew Feustel, STS-134 mission specialist, moves supplies on the middeck of the space shuttle Endeavour, with supplies destined for the International Space Station, in this photo provided by NASA and taken May 17, 2011.
NASA is taking a close look at some damage to the black thermal tiles on the belly of space shuttle Endeavour.
Heavy rains, deep snowfalls, monster floods and killing droughts are signs of a "new normal" of extreme US weather events fueled by climate change, scientists and government planners said on Wednesday.
A projected spate of extinctions of animals and plants this century may be less drastic than feared because the most widely used scientific method can exaggerate losses by more than 160 percent, a study said on Wednesday.
Ten new "floating" planets, which drift through the galaxy rather than orbiting stars, have been discovered by an international team of astronomers led by New Zealand scientists.
Stefanie Gordon captured an otherworldly image that rocketed around the globe as fast as her subject: Space shuttle Endeavour soaring from a bank of clouds, its towering plume of white smoke lighting the azure sky.
South Korea reports a fresh outbreak of bird flu near its capital despite the government's efforts to fend off the spread of the disease, the Ministry for Food, Agriculture.
South Korea reports a fresh outbreak of bird flu near its capital despite the government's efforts to fend off the spread of the disease, the Ministry for Food, Agriculture, Forestry and Fisheries said Wednesday.
Hewlett-Packard Co. is bracing for weaker financial results this year as it overhauls its services business to undo what its CEO described as years of neglect under his predecessor.
The United States has proposed that the last known stockpiles of the smallpox virus should be retained for at least another five years to allow for more research and prevent one of the world's deadliest diseases being used as a biological weapon.
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