Exactly when wildcats became house cats has never been clear, but a new study at last provides a date
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Study Finds Milky Way Has Four Arms, Not Two
A 12-year galactic survey unveils two overlooked arms
NASA Plans Spacewalks to Repair Space Station
After cooling system breaks down
Very Sad Planet Orbits Very Sad Star
Even the failed star known as a brown dwarf may have planetary company
More Oil, More Gas and Less Driving: Predicting America’s Energy Future
A new report is optimistic about continued growth in U.S. oil and natural gas production. But the future of energy is hard to predict
The Triple Whopper Environmental Impact of Global Meat Production
Livestock production may have a bigger impact on the planet than anything else. A new study shows how the effects vary from country to country — and points the way toward a more sustainable future
NASA Inc.: Current Woes Don’t Mean Disaster
Problems in the sky and on the ground are not necessarily signs that NASA is blundering again
Tiny Beauties: Life’s Smallest Wonders As Seen Through a Microscope
Marking its 10th anniversary, the BioScapes Digital Imaging Competition attracts the works of microscopy lovers worldwide
Emerging Economies Now the Leading Producers of E-Waste
Your old computers never die: the piles of hazardous discarded electronics will grow by 33% over the next five years
China’s First Moon Probe Makes Successful Landing
The rover ‘Yutu’ is expected to separate from the lander Sunday
Saturn’s Land of a Thousand Lakes
New images from the frozen moon Titan reveal a surprisingly Earth-like region