All Stories
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- Health & Medicine
Getting Enough Sleep
Kids and teens need plenty of sleep but have trouble getting enough.
- Fossils
A Rainforest Trapped in Amber
Tiny fossils show that rainforests existed in the western Amazon millions of years ago.
- Fossils
Dinosaur dig
Researchers uncover the fossil bones of a new species of long-necked, plant-eating dinosaur.
- Health & Medicine
A Sour Taste in Your Mouth
Researchers may have pinpointed how the tongue's cells detect sour tastes.
- Space
Dark collision
Observations of a tremendous galactic crash point to invisible stuff called dark matter.
- Animals
Saving Africa’s Wild Dogs
Learning more about African painted dogs may help keep these wild animals from dying out.
- Planets
Pluto and the plutons
A new definition would raise the number of planets in the solar system from 9 to 12.
- Tech
Atomic Drive
Chemists have assembled atoms into tiny molecular cars that motor across a gold surface.
- Planets
Lakes on Titan
Saturn's giant moon Titan appears to be sprinkled with lakes of liquid methane.
- Space
Dead star exploding
Huge nuclear explosions have ripped the outer layers off a dense, nearby star.
- Animals
Ants on Stilts
Some ants appear to estimate distances by keeping track of the number of steps they take.
