11 November 2015, 02:06 PM ET
A serendipitous photo taken during a scuba-diving trip in the Caribbean clued researchers into the world of a mysterious green and glowing eel.
11 November 2015, 02:06 PM ET
When scuba-diving scientists serendipitously spotted a glowing green eel in January 2011, they had no idea what caused it to light up like a brilliant neon sign.
11 November 2015, 01:01 PM ET
Stone Age people used beeswax and, most likely, honey, a habit that began at least as early as the beginning of agriculture.
11 November 2015, 11:08 AM ET
Thousands of years ago, rats as big as dachshunds lived side-by-side with people, who frequently ate the robust rodents.
11 November 2015, 10:39 AM ET
There are thousands of breeds of domestic sheep, and at least four species of wild sheep.
10 November 2015, 03:09 PM ET
This oddly adorable cat carries a genetic secret.
10 November 2015, 02:34 PM ET
A 'brightly fluorescent protein' has been revealed in some species of marine eels causing them to glow. Researchers have speculated that, because the full moon 'excites' the glow of the sea creature, this may be a mating adaptation.
10 November 2015, 02:18 PM ET
Octopuses are highly intelligent, and thanks to their amazing, neuron-filled tentacles, they can do humanlike tasks such as unscrewing jars and lids.
10 November 2015, 11:51 AM ET
SeaWorld San Diego, long known for its live killer-whale shows, will begin phasing out the performances next year in favor of conservation-based shows.
10 November 2015, 07:51 AM ET
The brains of a 520 million-year-old shrimplike creature were fossilized in carbon and pyrite, or fool's gold.
09 November 2015, 02:30 PM ET
Massive great white sharks launching their 3-ton bodies out of the ocean and into the air can be a spectacular sight, if you're lucky enough (and brave enough) to be in the right place at the right time.
09 November 2015, 11:04 AM ET
See amazing images of great white sharks breaching off South Africa, launching their 3-ton bodies from the water to grab seals.
09 November 2015, 09:19 AM ET
Humans aren't the only ones stressed out by city life. Feral urban bees' immune systems work harder to fend off more intense attacks from deadly pathogens.
09 November 2015, 07:19 AM ET
A mishmash of ancient amphibians and reptiles once swam and hunted prey in an ancient Brazilian tropical lake, a new study finds.
06 November 2015, 03:04 PM ET
Can these tiny turtles help prevent their species' extinctions?
05 November 2015, 11:38 PM ET
Crows are large black birds that are known for their intelligence and adaptability.
05 November 2015, 02:00 PM ET
An elusive snow leopard was recently seen and collared in Kyrgyzstan — a first for the landlocked, mountainous country.
05 November 2015, 08:01 AM ET
The skeleton of a heavily feathered, ostrichlike dinosaur has "unparalleled" fossilized feathers and skin — anatomical features that aren't usually preserved in dinosaur remains, a new study reports.
05 November 2015, 07:06 AM ET
Since the 1970s, it has been suggested that kangaroos don’t fart — or rather, the (ahem!) gas they emit contains very little, if any, methane. But now, new research suggests this isn’t true.
05 November 2015, 07:05 AM ET
Methane gas fermented in the guts of farm animals contribute up to 26 percent of U.S. methane emissions.
04 November 2015, 12:43 PM ET
Monkeys that are revolted by often disease-carrying things such as poop suggest that disgust drives cleanliness - and health.
04 November 2015, 07:22 AM ET
Bottlenose dolphins swimming in waters affected by the Deepwater Horizon oil spill are dying earlier and birthing fewer calves than dolphins living in other areas, a new study shows.
03 November 2015, 03:26 PM ET
Sixty-six million years ago, a giant raptor with feathered arms chased prey around the ancient South Dakotan landscape, a new study finds.
03 November 2015, 03:09 PM ET
The man-made fires in Borneo have hit orangutans hard, displacing them from their homes and exposing the animals to enough smoke to make them susceptible to respiratory problems.
03 November 2015, 07:01 AM ET
Workers in wasp nests sometimes kill their queens, even though these egg-laying wasps are also their mothers. Now, researchers think they might know why such murders take place.
02 November 2015, 10:50 PM ET
Alpacas are domesticated versions of a South American ruminant called the vicuña. There are no alpacas in the wild.
02 November 2015, 03:45 PM ET
An itsy-bitsy mollusk in Borneo is the new record holder for the world's smallest known snail, a new study finds.
02 November 2015, 11:40 AM ET
Sixty-six million years ago, a tyrannosaur may have sunk its sharp and serrated teeth into the bones of another tyrannosaur, new research suggests.
02 November 2015, 06:53 AM ET
A group of ancient "sea monsters" is caught up in a centuries-old case of mistaken identity, according to new research.
31 October 2015, 12:29 AM ET
The masked bandits of the animal kingdom they live in a wide range of climates and habitats.
30 October 2015, 11:54 AM ET
They're the soil-builders that allow Africa's arid savannas to be lush grasslands. What do they do inside their huge mounds - and how does a collective mind allow them to do it?
30 October 2015, 12:43 AM ET
Wombats are small marsupials that look like a cross between a bear, a pig and a gopher.