Space
Solar System Survey Casts Doubt on Mysterious "Planet Nine"
Orbits of four newfound objects show no signs of gravitational pull from proposed giant planet
EARTH
How to Build the Perfect Sandcastle--According to Science
Medicine
Brain-Invading Tapeworm That Eluded Doctors Spotted by New DNA Test
Biology
Are You a Magnet for Mosquitoes?
Space
Space
Fun with Gravitational Waves
Evolution
Evolution
When Horned Dinosaurs Traveled East
Public Health
Public Health
Why We Overrate the Lifesaving Power of Cancer Tests
Evolution
Evolution
The Making of an Allosaurus Graveyard
Evolution
Evolution
Could Asteroids Bombard the Earth to Cause a Mass Extinction in 10 Million Years?
Most Popular
Why Are so Many Babies Born around 8:00 A.M.?
Data visualization engineer Zan Armstrong takes a close look at human birth patterns.
Are You a Magnet for Mosquitoes?
Researchers are studying the way twins smell for clues about the genetic basis of insect appeal
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
You Do Not Think Alone
A new book argues that thought and knowledge are community efforts
Brain-Invading Tapeworm That Eluded Doctors Spotted by New DNA Test
Genetic sequencing of spinal fluid hailed as an advance over standard procedures for diagnosing brain infections
Special Report
Science and the Trump Presidency
Policy & Ethics
What to expect for climate change, health care, technology and more under the new administration
Infographic of the Week
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.
