10 September 2014, 07:06 AM ET
Some sloth lineages grew more than 220 pounds (100 kilograms) every million years — one of the fastest body growth rates known in the evolution of mammals, a new study finds.
09 September 2014, 04:24 PM ET
The dusty Pisco-Ica desert stretches along the coast of southern Peru, but more than 16 million years ago it may have been covered with sparkling water and home to a now-extinct family of dolphins, known as squalodelphinids, according to new findings.
09 September 2014, 04:18 PM ET
The Devils Hole pupfish, an inch-long fish that sparked a Supreme Court battle, could go extinct in less than 30 years, a new modeling study concludes.
09 September 2014, 07:23 AM ET
A parasitic fungus known to manipulate the brains of ants doesn't make slavelike "zombies" out of any old host. Turns out, it produces the correct mind-controlling chemical cocktail only when invading their preferred host species.
09 September 2014, 12:12 AM ET
With Nestlé now adopting a humane-farming policy, the market for inhumanely raised beef, pork and other meats is shrinking.
08 September 2014, 04:43 PM ET
A giant dinosaur found in Tanzania once lived during a lush, green period of flowering plants about 100 million years ago, paleontologists report.
08 September 2014, 03:58 PM ET
Researchers and coal miners excavated Rukwatitan bisepultus, a new species of titanosaurian dinosaur in 2007 and 2008.
08 September 2014, 03:03 PM ET
By looking at images of animals in Egypt's archaeological record, scientists found that most extinctions over the last 6,000 years were linked to periods of big change in terms of climate and human civilization.
08 September 2014, 01:07 PM ET
Species are dying off thousands of times faster than they are being created, according to new research that highlights the planet's looming biodiversity crisis. The study also suggests humans are on the verge of causing a sixth mass extinction on Earth.
05 September 2014, 11:56 PM ET
An international team of researchers studies one slim bird to answer some big biological questions.
05 September 2014, 06:32 PM ET
Florida fisherman catches more than he bargained for with giant "alien" shrimp.
05 September 2014, 06:23 PM ET
A fisherman in Fort Pierce snapped photos of a huge shrimp-like creature caught by a nearby couple. The animal seems to be a mantis shrimp, says one expert.
04 September 2014, 05:34 PM ET
Whooshh Innovations has created a system to effectively (and safely) shoot migratory fish upstream without having to waste excess water.
04 September 2014, 12:23 PM ET
Water is a tool for Asian archerfish, a striped species that shoots its prey with adjustable jets to knock it into the water below. A new study reveals how the fish target prey more than 6 feet away.
04 September 2014, 09:16 AM ET
A gargantuan, long-necked dinosaur as big as a two-story house and weighing as much as 12 elephants once stalked a flower-dotted earth some 77 million years ago in what is now Argentina.
04 September 2014, 09:11 AM ET
A newly discovered species of super massive dinosaur lived in present-day Argentina about 77 million years ago.
04 September 2014, 09:09 AM ET
Drexel University associate professor Kenneth Lacovara, PhD discovered the fossil skeleton in southern Patagonia in Argentina. At ~65 tons, the Dreadnoughtus schrani weighed more than 7 T. rex. and was 85 feet long.
03 September 2014, 05:00 PM ET
Mammals were long thought to have evolved nocturnal lifestyles as a way to co-exist with dinosaurs, but new research finds that nighttime behavior may have evolved 100 million years earlier than mammals did.
03 September 2014, 03:50 PM ET
The clever fish shoots a jet of water at a leaf hanging above the water and knocks down the unaware insect it was carrying.
03 September 2014, 02:13 PM ET
Mysterious new animals discovered offshore of Australia are so unusual that an entire new taxonomic family was created to classify them.
03 September 2014, 01:51 PM ET
From falcons to cockroaches, a myriad of different animals have donned backpacks in the name of science.
03 September 2014, 07:14 AM ET
Fossil hunters unearthed the 120-million-year-old bones of 24 baby dinosaurs and the skull of one older dinosaur in China's Liaoning province. The remains suggest that the older dinosaur was sitting atop the nest of the babies, acting as a babysitter.
02 September 2014, 07:41 PM ET
Wild marmosets that watched a video — a short flick of a marmoset opening a box to get a banana slice — are likely to copy the what they saw in the video and open the box themselves, a new study finds.
02 September 2014, 07:40 PM ET
Wild marmosets living in the Brazilian forest can learn how to open a puzzle by watching a monkey do it in a video, a new study suggests.
02 September 2014, 03:53 PM ET
A group of wild marmosets were exposed to a how-to video of an unknown marmoset opening a box containing a banana. Some of them appeared to learn from the video and figured out how to open the box on their own. Full Story: http://goo.gl/JL8qFP
02 September 2014, 03:39 PM ET
A couple of juvenile squirrels were found trapped in the base of a porch column. Fearing that they were abandonned by their mother, the Humane Society's Wildlife Services engineered a small ladder for them.
02 September 2014, 02:25 PM ET
The geckos Russia sent to space to have sex have sadly perished, the Russian space agency said yesterday (Sept. 1). The mission's goal was to study the animals' mating, fertilization and embryonic development in a zero-gravity environment.
02 September 2014, 12:49 PM ET
An invasive species of camel cricket from Asia is now far more common in American basements than the native variety, a citizen science project found.
02 September 2014, 12:12 PM ET
For the first time in weeks, a gorilla with a nasty sinus infection is breathing through his nose again.
02 September 2014, 12:03 PM ET
Zookeepers at Woodland Park Zoo in Seattle arranged for a 35-year-old gorilla to have surgery after a CT scan revealed that he had a severe sinus infection.
30 August 2014, 12:24 PM ET
On the one-hundredth anniversary of the last passenger pigeon's death, reflections on the loss of darkened skies.
29 August 2014, 03:10 PM ET
Swinging on fire hoses. Basking in the sun. See the many ways these chimpanzees are enjoying retirement at Chimp Haven after years in a laboratory.