Look, Ma! No Mitochondria
Scientists have found the first eukaryotic organism that functions fine without mitochondria, the "powerhouses" that make energy for the cells of yeast, humans and other animals.
Animals
Wildlife Biologists Manage Bear Interactions In America's National Parks
There are about 1,600 black bears in Great Smoky Mountains National Park and nearly 11 million annual visitors. The park's wildlife biologists have the challenging job of managing the interactions between them.
Meet The Tiny Critters Thriving In Your Carpet, Kitchen And Bed
Dust mites, gall wasps and book lice don't bite, but they might make you wheeze. Scientists found about 100 types of arthropods wiggling or munching skin flakes in typical homes. Take a look.
Scientists Look To A Poster To Name A New Species Of Wasp
The wasp species is only centimeters in length. When it came time to find a name, researchers' eyes fixed on a Brad Pitt poster in the lab. They named the species: Conobregma bradpitti.
Bluefin Blues: Valuing A Tuna Species Before It's Too Late
Our appetite for the Pacific bluefin — prized for its tender, flavorful flesh — has reduced stocks to just 2.6 percent of original levels. The incentive to save bluefin is ecological — and financial.
Friend Or Fiend? 'Pit Bull' Explores The History Of America's Most Feared Dog
Author Bronwen Dickey says the idea of pit bulls as predators is based on myth and misinformation. In the early Hollywood era, Dickey says, the dogs were often chosen to appear in comedies.
In The Digital Age, Connecticut State Police K-9 Unit Trains Edogs
For years police have used dogs like German Shepherds to sniff out things a human officer might miss. As more evidence goes digital, officers are training K-9s to sniff out clues there, too.
Ringling Elephants Retire To Florida For Cancer Research
The Ringling Brothers and Barnum and Bailey Circus no longer uses elephants in its shows. The animals are heading for retirement in Florida. But their work isn't done yet.
Geologists Find Clues In Crater Left By Dinosaur-Killing Asteroid
Scientists drilling beneath the Gulf of Mexico have hit the layer deposited when an asteroid the size of Staten Island, N.Y., hit Earth. Samples might contain details from that fateful day.
Facing Drought, Zimbabwe Says It Is Selling Off Wild Animals
A government minister said the proceeds will be used "to buy food and secure water facilities for distressed animals." Zimbabwe is famous for parks full of animals such as elephants and lions.