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Space

Capturing the Stuff of Space

A spacecraft brings comet grains and stardust back to Earth.

Animals

Poor Devils

When Tasmanian devils bite each other, they may pass on a fatal disease.

Climate

Warmest year on record

Last year's worldwide average temperature was the highest ever recorded by scientists.

Health & Medicine

Eating Troubles

Researchers are zeroing in on what causes certain people to see food as the enemy.

Animals

Red Apes in Danger

The population of orangutans in northeastern Borneo appears to be falling rapidly.

Chemistry

Mother-of-Pearl on Ice

Scientists have found a way to copy the mother-of-pearl structures that oysters make.

Health & Medicine

Spit Power

Saliva provides clues about diseases, dental cavities, and who might have been at a crime scene.

Animals

Polly shouldn’t get a cracker

When female kakapo parrots go on a diet, they produce fewer male chicks.

Humans

Early Maya writing

Archaeologists have found the earliest known example of Maya writing.

Animals

A whale’s amazing tooth

The narwhal's long tusk may sense changes in water temperature and pressure, helping the sea animal survive in the Arctic.

Animals

Professor Ant

Certain ants can teach other ants the route to a food source.

Environment

Plant gas

Trees, grasses, and other plants may produce the greenhouse gas methane.