11 June 2014, 08:08 AM ET
Hundreds of well-preserved tracks may resolve a debate about how an ancient marine predator trawled the oceans.
10 June 2014, 11:26 PM ET
With as many as 200,000 species, stunning diatoms are diverse.
10 June 2014, 10:41 PM ET
Hamsters are small rodents that are commonly kept as house pets.
10 June 2014, 10:40 PM ET
The beauty of diatoms hints at their incredible genetic diversity, but belies their role supplying the oxygen we breathe.
10 June 2014, 07:06 PM ET
The sperm of the desert ant Cataglyphis savignyi swim in bundles, a rare example of sperm cooperation. The teamwork boosts the swimming speed of the sperm, potentially providing a reproductive advantage.
10 June 2014, 07:05 PM ET
The cataclysm that ended the Age of Dinosaurs not only drove land animals to migrate into the water, but also pushed aquatic creatures to colonize the land, a new study for the first time reveals.
10 June 2014, 07:03 PM ET
When it comes to wooing a female, male diving beetles don't have it easy: They must latch onto their intended — underwater — while she wriggles about erratically.
10 June 2014, 07:01 PM ET
As the glaciers melted about 15,000 years ago, warmer weather and ice-free conditions allowed king penguins to colonize the string of islands north of Antarctica, a new genetic study has found.
10 June 2014, 07:01 PM ET
The recent elimination of the lethal coral snake in the North Carolina Sandhills has surprisingly led the harmless scarlet kingsnake there to mimic the exterminated snake more closely.
10 June 2014, 01:56 PM ET
Chimpanzees were paired up to play in strategic prediction matches based on 'game theory.’ Compared to a control group of undergraduate humans, the chimps walked away the 'smarter' primate. FULL STORY: http://goo.gl/RVwOpy
10 June 2014, 12:45 PM ET
Despite booming adult populations, young lobster numbers are nearly half of what they were in 2007.
10 June 2014, 12:18 PM ET
Dozens of sperm cells of the ant species Cataglyphis savignyi bundle together. Bundled sperm move twice as fast as single sperm, perhaps giving them an evolutionary advantage.
10 June 2014, 11:52 AM ET
Chimpanzees can outsmart humans in simple strategy games because they have evolved in highly competitive cultures.
10 June 2014, 05:17 AM ET
Animal testing is not the "gold-standard" — nor should it be.
10 June 2014, 04:05 AM ET
We humans use the euphemism for sex that “we like to get a leg over” but the first jawed vertebrates – the placoderms – they liked to get a leg in.
09 June 2014, 08:07 PM ET
Wolves are large carnivores — the largest member of the dog, or Canid, family. Wolves are common to all parts of the Northern Hemisphere.
09 June 2014, 06:47 PM ET
A puzzling fossil find from more than 500 million years ago has scientists curious about how 'bilateral' creatures such as humans evolved. The ancient 'tapeworm' appears to have become bilaterally symmetrical earlier than other organisms.
09 June 2014, 08:34 AM ET
Until now, Oregon was the one state along the U.S. West Coast essentially spared from the disease, which causes a sea star's body to disintegrate, ultimately leading to death.
09 June 2014, 08:03 AM ET
Sea star wasting syndrome, which has been documented from California to Alaska and even along the East Coast from Maine through New Jersey, causes a sea star's body to disintegrate into a puddle of goo, ultimately leading to death.
08 June 2014, 05:05 PM ET
Just as humans lament not pursuing a lover or bemoan having eaten that extra slice of chocolate cake, rats may experience feelings of regret, too, new research suggests.
07 June 2014, 10:21 PM ET
This spring, the racehorse California Chrome won the first two legs of the Triple Crown. If he wins, he will be the first Triple Crown winner in 36 years and only the 12th horse in history to do so.
07 June 2014, 02:14 AM ET
Deer sterilization is starting to make an impact in U.S. communities.
06 June 2014, 02:32 PM ET
An amazing new video shows Arctic life from a polar bear's point of view.
06 June 2014, 02:30 PM ET
For all you bird lovers out there, you can watch a set of newly-hatched osprey chicks ruffle their tiny feathers on a live webcam.
06 June 2014, 10:40 AM ET
A female polar bear equipped with a radio collar was captured having a meal, interacting with a potential mate, and swimming. The footage was recorded in April 2014 in the Beaufort Sea, a marginal sea of the Arctic Ocean.
05 June 2014, 05:56 PM ET
Rabbits are small mammals with fluffy, short tails, whiskers and distinctive long ears. There are about 30 species of rabbits around the world.
05 June 2014, 03:30 PM ET
Oregon's wandering gray wolf OR-7 has settled down and is rearing its first puppies.
05 June 2014, 02:32 PM ET
Since the catfish's barbel whiskers detect dinner by detecting acid levels in the sea, the researchers say the freaky looking fish could be affected by the rise in carbon dioxide emissions, which dissolve in water and increase ocean acidification.
05 June 2014, 12:10 PM ET
The first three-dimensionally preserved eggs of ancient winged reptiles that lived more than 100 million years ago have been unearthed in China.
05 June 2014, 12:07 PM ET
Researchers found preserved pterosaur eggs, and the fossilized remains of adult pterosaurs, in the Turpan-Hami Basin in China. Pterosaurs are prehistoric winged reptiles that lived during the time of dinosaurs.
05 June 2014, 02:48 AM ET
For decades, scientists have tried to understand the complex and gruesome relationship between the parasitic emerald wasp Ampulex compressa and its much larger victim, the common household cockroach Periplaneta americana.
04 June 2014, 07:00 PM ET
Loud little frogs in Taiwan get a boost from manmade structures by issuing their mating calls from open concrete drains, new research finds. The drains are unlike anything in the frogs' natural environment, but they use them anyway.