01 September 2015, 10:35 AM ET
Fossils of 460-million-year-old eurypterids (sea scorpions) were uncovered underneath the flowing waters of the Upper Iowa River.
01 September 2015, 08:18 AM ET
An 80-million-year-old lizard discovered in southern Brazil has provided a surprising clue about how these reptiles evolved, and where they once lived, according to a new study.
31 August 2015, 03:00 PM ET
125-million-year-old microbes were trapped in ancient seafloor rocks by minerals, leaving a record from the earliest days of the Atlantic Ocean.
31 August 2015, 08:45 AM ET
One of the toothy stars of "Shark Week" has just phoned home after five months at sea, revealing that this longfin mako shark was a prolific and deep-diving swimmer.
31 August 2015, 05:56 AM ET
An elusive sea creature that boasts a vibrant golden shell covered in thick, slimy hair was recently spotted for the first time in 31 years, researchers say.
31 August 2015, 05:54 AM ET
The complicated world of hyena sex involves social hierarchies, weird and potentially dangerous courtship rituals and female pseudopenises that make forced sex impossible.
29 August 2015, 09:48 AM ET
The most successful creatures on the planet, insects are a wild bunch. From six-legged critters with forehead eyes and breathing holes on their sides to a dragonfly with a 2.5-foot wingspan, here are some of the most amazing and wacky insect facts.
28 August 2015, 03:15 PM ET
Twin pandas born at the Smithsonian's National Zoo would have been fraternal brothers, if the firstborn cub hadn't died just five days after making its debut on Earth.
28 August 2015, 08:12 AM ET
When boy guppies pester the girls they like, it can actually make the female fish better at swimming away, a new study finds.
27 August 2015, 03:05 PM ET
Viruses related to the human immunodeficiency virus (HIV) have infected Old World monkeys as far back as 16 million years ago, according to a new study.
27 August 2015, 09:08 AM ET
Knut the polar bear, the global sensation that captured the public imagination, died of an autoimmune disorder that caused his immune system to attack his brain.
27 August 2015, 08:35 AM ET
A field of grey, motionless kangaroos staring down a bicyclist in a recent YouTube video is not evidence of marsupial zombies, scientists say — though the pouched Australians look eerily possessed.
26 August 2015, 06:47 PM ET
One of giant panda Mei Xiang's twin cubs died today (Aug. 26), just five days after its birth, the Smithsonian's National Zoo in Washington, D.C., reported.
26 August 2015, 02:00 PM ET
A creepy-crawly millipede is the first newfound species to be described with a 3D imaging method called high-resolution X-ray microtomography (microCT).
26 August 2015, 02:00 PM ET
The 3D cyberportrayal of a newfound millipede looks like it hopped from the screen of James Cameron's "Avatar," with a blue body and alien appearance to boot.
26 August 2015, 10:21 AM ET
The new species of millipede (Ommatoiulus avatar n. sp., family Julidae) was imaged with high-resolution X-ray microtomography (micro-CT). This is the first study to use micro-CT is describe a new species.
25 August 2015, 08:01 AM ET
A tiny, foldable microscope can be made of paper, uses no power and can magnify objects up to 2,000 times its original size.
25 August 2015, 08:00 AM ET
A new pocket microscope made of paper can be folded into shape in 10 minutes and used to discover the hidden beauty of nature.
25 August 2015, 08:00 AM ET
Zookeepers are playing a complicated game of "baby swap" with two new pink and fuzzy panda twins at the Smithsonian's National Zoo in Washington, D.C.
25 August 2015, 07:58 AM ET
The Smithsonian’s National Zoo is home to two new twin panda cubs.
25 August 2015, 07:57 AM ET
The Sumatran rhino is now considered extinct in the wild in the Southeast Asian country of Malaysia, according to a new study.
24 August 2015, 04:03 PM ET
Stanford University researchers have developed a folding lens that can turn a cell phone into a microscope. It’s made with simple materials (paper and glass balls) for under a dollar. Aaron Pomerantz captured a mite in action.
24 August 2015, 06:58 AM ET
A "robber frog" with beady, gold-rimmed eyes and a bizarre bat with a record-long tongue are among the menagerie of species discovered during an expedition in Bolivia.
21 August 2015, 03:09 PM ET
The kelp gull has a few unsavory eating habits.
21 August 2015, 09:55 AM ET
Get the science scoop on the animal kingdom's Mr. Fantastic, Invisible Woman, Human Torch and Thing. Can you guess which animals make the cut?
21 August 2015, 07:29 AM ET
A 2-million-year-old skull unearthed in South Africa belongs to the earliest baboon ever found, a new study finds.
20 August 2015, 05:31 AM ET
A marine scientist is dwarfed by what is being called the biggest shark ever caught on camera in a recent video taken near Mexico's Guadalupe Island. How did this 20-foot-long (6 meters) great white Internet sensation become such a behemoth?
19 August 2015, 09:30 AM ET
Dogs may play catch, obey commands and even share the occasional dessert with their owners, but can they understand simple interactions between people?
19 August 2015, 07:37 AM ET
The slender hummingbird tongue has been misunderstood for more than 180 years, a new study finds.
19 August 2015, 07:36 AM ET
The exact way hummingbird tongues work has long eluded scientists — until now.
18 August 2015, 07:32 PM ET
Vitamin K is known as the “blood-clotting vitamin” for its important role in healing wounds.
18 August 2015, 07:04 PM ET
Certain spiders have evolved a novel way of gliding through their rainforest habitat.