All Stories
- Humans
Oldest Writing in the New World
Signs carved into a stone slab may represent the earliest known writing in the Americas.
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- Animals
Sea Giants and Island Pygmies
Food supply may help decide an animal's natural size on an island or in the ocean.
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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.
