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Virgin Galactic is one flight closer to becoming a commercial "spaceline." The company's passenger spacecraft, SpaceShipTwo, completed its first rocket-powered flight Monday morning above the Mojave Desert in California.

Scientists in California investigate why at least several hundred dead squid are washing ashore.

Scientists are on an epic treasure hunt for meteorite fragments from a spectacular fireball that lit up the daytime sky over California last month.

California scientists are hunting ways to predict who's about to have a heart attack, and they say they've found a key clue....

An entomologist couple at UC Riverside travel the world searching for parasites to counter imported pests. Their lab is a high-security warren of trick doors and rooms within rooms.

Scientists in California say they're trying to replicate the power of the sun by firing laser beams at a tiny pellet of hydrogen. Physicists at the National Ignition Facility in Livermore say the nuclear fusion experiments may offer the world a clean source of energy, The Times of London reported Sunday. The hydrogen pellet will be hit with 192...