Animals
- Earth
When life exploded
Life exploded in diversity during the Cambrian Period. Experts are exploring what could account for this sudden change 540 million years ago.
By Beth Geiger - Animals
New frog discovered in New York City
This animal could almost be mistaken for the southern leopard frog — until it opens its mouth. The call the males issue has proven unique.
By Janet Raloff - Animals
Fish just wanna have fun
Although biologists have observed fish playing before, scientists have now recorded hours of video showing a new type of antic in fish.
- Animals
Teen studies living flashlights of the deep
A teen studies a cryptic fish to better understand when and why it flashes its bacterial glow.
By Sid Perkins - Animals
News Brief: No hopping for these ancient ‘roos
By hopping, today’s kangaroos can scoot swiftly through the countryside. That was not true for some of their ancient cousins. True giants, those now-extinct kangaroos would have walked on two feet — and relied on their tippy-toes.
By Susan Milius - Animals
Coming: The sixth mass extinction?
Species are dying off at such a rapid rate — faster than at any other time in human existence — that many resources on which we depend may disappear.
- Animals
Picture this: Too many walruses
A giant herd of walruses have hauled out onto a beach in Alaska. They don’t belong there, but with no ice nearby, they have taken to land.
- Animals
Rare as a rhino
Most species are rare. Some have always been rare. A problem develops when people are responsible for accelerating a species’ rarity to the point that extinction threatens.
- Animals
Sharks’ super sniffers at risk
Rising ocean acidity could rob sharks of their ability to sniff out dinner, marine biologists find.
- Animals
Chef puts eco-bullies on the menu
Some immigrant species can become a nuisance, eating up or displacing the natives. Often people find little incentive to catch and remove the newcomers — unless they find them too yummy to pass up.
By Janet Raloff - Animals
A fish out of water — walks and morphs
When this modern ‘walking’ fish was raised on land, its body changed. How it adapted resembles some prehistoric fish. These alterations hint at evolutionary changes that may have made life on land possible.
By Susan Milius - Animals
Germs explain some animal behaviors
The bacteria that people and other animals host in and on their bodies are invisible to the eye. Yet they can play a very visible role in behavior. It’s something scientists are just coming to appreciate.