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Elon Musk Publishes Plans for Colonizing Mars
The billionaire entrepreneur and founder of SpaceX wants to make humanity a "multi-planetary species”
China Shatters "Spooky Action at a Distance" Record, Preps for Quantum Internet
Results from the Micius satellite test quantum entanglement, pointing the way toward hack-proof global communications—and a new space race
Solar System Survey Casts Doubt on Mysterious "Planet Nine"
Orbits of four newfound objects show no signs of gravitational pull from proposed giant planet
Reverse Engineering Mysterious 500-Million-Year-Old Fossils That Confound Our Tree of Life
A new high-tech approach is helping paleontologists better understand the link between a set of ancient fossils and modern animals
Sphere Made to Redefine Kilogram Has Purest Silicon Ever Created
New measure, to take effect in 2018, relies on crystal that is free of impurities
Will Mars Go Mute? NASA's Aging Orbiters May Not Last Long Enough to Support Future Exploration
The space agency does not have a replacement in the works to take over their vital role of relaying communications
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Videos
Chimps Engage in Costly Quid pro Quo
Chimpanzees have been known to cooperate when there is no foreseeable personal cost. Watch and learn whether chimps are capable of riskier, more complex forms of collaboration.
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