A forensic DNA test has provided '99.9 percent certainty' that Osama bin Laden was killed in Pakistan on Sunday. How does that work, exactly?
SEAL Team Six: Hiding in a military city in Pakistan, Osama bin Laden was found through a combination of high-tech surveillance and old-fashioned detective work.
Cracker-size satellites are to launch with the Space Shuttle Endeavour, advancing efforts to populate the Earth's orbit with tiny 'space-chips.'
Prince William and Kate Middleton wedding: Astronauts aboard the International Space Station recorded a congratulatory message to Prince William and Kate Middleton on Thursday, on the eve of their nuptials in London.
Space shuttle launch: the US space shuttle Endeavour will launch for the last time on Friday, drawing an estimated 750,000 spectators from all over the country.
The nation's Storm Prediction Center in Norman, Okla., reports that tornadoes this year have already claimed more lives than all of last year, possibly making this the deadliest tornado outbreak since the 1974.
As storms ravage the South, a recent study suggests that Dixie Alley may just be an extension of its better-known neighbor Tornado Alley, putting much of the eastern US at an 'elevated' risk for tornadoes.
SETI has temporarily halted one of its chief alien-hunting tools, the Allen Telescope Array, citing lack of funding.
Amenhotep III: The largest Amenhotep III to date has been unearthed in Egypt. Amenhotep III was King Tut's grandfather.
St. Louis tornado on Friday flattened houses and shredded the roof of a crowded airport terminal. It is rated the second-highest level on the Enhanced-Fujita tornado damage scale, EF-4, a first for this year's tornado season. No one reported to be killed.
Higgs boson, aka, the "God particle" is a subatomic particle that is presumed to bestow mass on all other particles. An internal note from physicists at the Large Hadron Collider in Switzerland has scientists buzzing.
A new framework for the universe's formation suggests that it began as a single thready line, then evolved into a plane, and only then the three-dimensional space we now inhabit. This could simplify sticky cosmological questions, including dark matter and gravity waves.
Claiming to have obtained a top-secret memo (but the JFK Library has no record of it), author and paranormal researcher William A. Lester, Ph.D., found a way to combine UFOs with the Kennedy assassination, hitting the fringe-conspiracy-theory jackpot. (Lester has a doctorate from the American Institute of Holistic Theology, which according to its website 'has chosen not to seek traditional accreditation.')
Largest spider fossil has been discovered in volcanic ash in China. The largest spider fossil is believed to be as old as the dinosaur.
A study of more than a century of global seismic records has prompted some scientists to say that major earthquakes have tended to occur in clusters. Others disagree.
The Earth has many more barrier islands than previously thought, a global survey has found.
NASA is turning to private companies to replace the space shuttles, and it will give four proposals from the likes of Boeing and SpaceX $269 million this year.
The grassroots 'AT-AT for America' project proposes building a fully functional Imperial walker. Needless to say, Lucasfilm's lawyers aren't crazy about the idea.
If Tatooine had trees, would they be black? Scientists say that a planet with two suns might have black or gray plants, not green. Why is that?
Every year, more than 1,100 tornadoes are spotted in the United States. If you see a funnel cloud, what should you do? Take our quiz.