Is our family tree due for a pruning?
As the climate warms, the Arctic greens—and vice versa.
Earlier Arctic plant growth is too early for migrating caribou.
Constant vigilance rewards hobbyist astronomers.
Stem cell mini-brains reveal how brain regions organize.
Dung beetles reduce harmful methane emissions in cow droppings.
Geologists study earthquake risk in a crowded country.
A pulsing star at our galaxy’s heart shares a black hole’s secrets.
New intravenous vaccine prevents malaria in first tests.
Madagascar's biodiversity boom ended long ago.
Observations of a star’s magnetic field reveal unusual behavior.
Watch the latest Mars rover hunt for signs of life.
In a Chinese quarry, scientists discover the oldest known fossil primate skeleton.
Two giant galaxies combine to form a massive ellipse.
A frog declared extinct nearly two decades ago reappears in Israel.
A life-threatening disease emerges in Botswana from mongoose hosts.
Planet-forming particles swarm an unlikely star host.
After 17 years underground, red-eyed Brood II cicadas emerge.
A breakthrough technique delivers a see-through brain.
Plentiful ice in the Saturn system hints at its age.
Diversity in algae-eating fish protects coral from toxic seaweed.
More carbs in our diet helped harmful oral microbes to succeed.
Farmers in the Andes use biodiversity as insurance.
Astronomers measure how fast a black hole spins.
The Arctic’s frozen waters have entered a radically new state.
A new study identifies a likely ancestor to all placental mammals.
Human ancestry informs the study of modern diseases.
Bones reveal that ancient human relatives were part-time tree dwellers.
How a deep-drilling experiment is fighting climate change.
A river valley found on a distant moon resembles Earth’s Nile.
A short-nosed bat bests its nectar-drinking cousin at pollination.
A web program creates disease maps to track epidemics.
A giant hole in the dust disk around a star could hold multiple planets.
DNA evidence identifies the world’s rarest whale.
Paying attention stimulates brain cells that improve memory.
Students partner with NASA to direct cameras orbiting the Moon.
City-dwelling coyotes in the United States choose lifelong partners.
An enormous telescope observes the Universe's oldest light.
An enormous galaxy cluster is birthing stars at a furious pace.
Fossils explain where and when close relatives in our family tree coexisted.
Scientists reconstruct the environments of our primate ancestors.
A submersible microscope reveals plankton behavior.
As habitats shift, connections are key for climate-sensitive species.
Scientists seek cures for disease in underground microbes.
NASA’s mission control guided Curiosity to a perfect landing in Gale Crater.
Our health depends on trillions of microbes living in our bodies.
Have black widow spiders lost their bite?
Sky-gazers caught a rare glimpse of Venus framed by the Sun.
Mysterious, tiny goblin spiders get a census.
Fossil gives a heads-up on the origin of flexible infant skulls.