Bjorn Carey

Why do so many people get sick on cruise ships? Life's Little Mysteries explains why cruises are a breeding ground for germs - and how to avoid them.

It doesn't take much to convince people that they've seen an experimental missile or a UFO.

A brain upgrade allows this surgeon to deftly destroy tumors that move while a patient breathes.

Just a few thousand years ago, humans followed monsoon rains to the Sahara Desert and were greeted with lush vegetation and plentiful wildlife.

The most feared creatures at the top of a food chain maintain equilibrium, but humans often disturb this delicate balance.

The fossil record is chock full of big beasts that didn't make it. Find out why, and what lessons can be learned.

Although many of Earth's largest animals are endangered, it's not too late to take steps to prevent their demise.

Active teaching seems to be rare in the animal world. Perhaps painful stings make for attentive students.

Scientists suggest a midlife crisis killed off many of these beasts just as they entered their sexual prime.

They can travel hundreds of miles by air, but have virtually no say in where they go.

The new theoretical work could help answer how dinosaurs kept warm.

A 6,000-year-old corridor between Yellowstone and Grand Teton national parks shrinks as developments move in.

A new study suggests the presumed rate of extinction might be severely underestimated.

One stiff drink makes people fail to notice a person in a gorilla suit running across the TV screen.

By putting some ants on stilts and lopping the legs off others, researchers conclude an internal pedometer is at work.

Birds migrating long distances set out earlier than birds traveling less far.

Nature's own reality show is getting such high ratings that officials ask viewers to limit their time.

Changes in the daily weather cause small wobbles in the entire planet's spin.

Among the discoveries: new species of frog, mammals that cry like babies, and 11 species found only in the Rubeho region.

Ancient orb web-weaving spiders might have influenced the evolution of flying insects.

By spying on their neighbors, client fish enlist the aid of the most trustworthy skin-cleaning fish.

For the second year running, Phoenix takes the top place, where residents sweat enough to fill an Olympic-sized swimming pool every three hours.

This orchid is so reproductively exclusive, it only has sex with itself.

Once thought to be produced by the liver, scientists have tracked the key antifreeze protein to the fish's pancreas.