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?
Public Health
Public Health
40 is Considered Old in Senate GOP Health Plan
Climate
Climate
Huge Icelandic Eruption Mimics Industrial Emissions
Conservation
Conservation
Yellowstone Grizzly Bears to Lose Endangered Species Protection
Biology
Biology
Air Guns Used in Offshore Oil Exploration Can Kill Tiny Marine Life
Behavior & Society
Behavior & Society
The Science of Microaggressions: It's Complicated
Most Popular
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
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
Science Calls Out Jeff Sessions on Medical Marijuana and the "Historic Drug Epidemic"
Rolling back protections from federal interference in state legalization laws could worsen the opioid overdose crisis
Why I Won't Get a PSA Test for Prostate Cancer
Physicians are still recommending the blood test for prostate cancer even though it harms far more men than it helps
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.
