Orbits of four newfound objects show no signs of gravitational pull from proposed giant planet
The billionaire entrepreneur and founder of SpaceX wants to make humanity a "multi-planetary species”
Results from the Micius satellite test quantum entanglement, pointing the way toward hack-proof global communications—and a new space race
Data visualization engineer Zan Armstrong takes a close look at human birth patterns.
Researchers are studying the way twins smell for clues about the genetic basis of insect appeal
Rolling back protections from federal interference in state legalization laws could worsen the opioid overdose crisis
What to expect for climate change, health care, technology and more under the new administration
Infographic of the Week
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.