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Climate change will alter the mix of vegetation on 49 percent of Earth's land surface by the end of this century, scrambling and shifting existing ecosystems, according to a new study. [More]

Climate change will alter the mix of vegetation on 49 percent of Earth's land surface by the end of this century, scrambling and shifting existing ecosystems, according to a new study. [More]

NASA has lost or misplaced more than 500 of the moon rocks its Apollo astronauts collected and brought back to Earth, according to a new agency report.

Launch $1-billion-worth of spare parts to the International Space Station, and you can keep Earth's orbital outpost going for another decade.

Comparison of "habitable zone" of Kepler 22 system and our solar system (NASA/Kepler) Today sees the announcement that one of the “candidate” planets listed from NASA’s Kepler mission back in February is now confirmed, and it’s a key one. At 2.4 times the diameter of the Earth the planet Kepler 22-b also orbits its parent star (which is a slightly less massive G-dwarf star than the Sun and 25% less luminous) in 290 Earth-days, which places it within the nominal “ habitable zone “. This system is about 600 light years from us.

Quantum theory is one of the most profound discoveries of humanity. In my view, it s on a par with Cuban cigars and single malt whiskey. The theory has been hugely successful in showing us the inner workings of the universe.

For some Silicon Valley entrepreneurs, simply coming up with lines of well-written code can turn a startup into a smashing success. But Skybox Imaging founder Dan Berkenstock is aiming much (much) higher.

All NASA spacecraft sent to other planets must undergo meticulous procedures to make sure they don't carry biological contamination from Earth to their destinations .

Remember the last time you visited a new office building, airport, or university campus and were lost the moment you stepped away from the main doors? That's a problem that buildings like large hospitals try to fix with color-coded lines painted on the floor, complex signage systems, and other tweaks--usually very low-tech

A skywatcher has photographed a troubled Russian Mars probe that remains stuck in Earth orbit three weeks after its launch. [More]

Energy efficiency is not just for appliances and vehicles on Earth--spacecraft that conserve fuel can provide a boost to humanity, too. In a recent article for

DigitalGlobe, the firm that provides much of the imagery for Google Earth, is launching a next-generation satellite in 2014. However, the super-sharp images of the WorldView-3 aren't for Google and Bing Maps: They're going straight to the military and intelligence agencies

When humankind once again ventures out from Earth's neighborhood, where will we go?

Editor's note: This essay, by renowned evolutionary biologist Lynn Margulis, was published in the August 1994 issue of Scientific American with the title, " Sex, Death and Kefir ." Margulis died on Tuesday in her home, according to a statement released by the University of Massachusetts at Amherst, where she was a Distinguished University Professor of Geosciences.

Stan Richards is the mastermind behind the biggest independently owned ad agency in the nation. Weve gathered some of The Richards Groups greatest hits, as well as one that missed the mark. Here are a dozen of the best-loved advertising campaigns that came from the shop of Stan Richards, the disciplinarian mastermind behind The Richards Group, the nation’s biggest independently owned ad agency