06 August 2015, 12:23 PM ET
In the wilds of Brazil, researchers have discovered the first frogs with venomous spikes on their heads. Just a gram of this venom could take down tens of humans or thousands of mice.
06 August 2015, 10:54 AM ET
A cute new Andean frog has a dark-brown "face mask" and a white mottled belly. The little guy is not much bigger than a jelly bean.
05 August 2015, 06:56 PM ET
Wasps can do a lot more than ruin a summer picnic.
05 August 2015, 03:09 PM ET
These animals basically have the ability to see all around themselves. Scientist believe that they evolved in this manner to give them an advantage when fleeing from predators.
05 August 2015, 02:30 PM ET
About 10 million years ago, a distant cousin of the modern walrus snapped at fish as it swam near the shore of what is now modern Japan, a new study finds.
05 August 2015, 02:29 PM ET
Exotic animals are being set up for slaughter by ranchers in several U.S. states. They are held in pens and for a price, hunters have the opportunity to kill them.
05 August 2015, 11:06 AM ET
This spider's incredible mating dance will make you swoon.
04 August 2015, 08:14 PM ET
Cecil the lion is but a symbol of the "factory" approach to hunting.
04 August 2015, 10:41 AM ET
The fossilized remains of an ancient marine reptile with an extremely long neck and paddlelike appendages were recently uncovered in an unlikely place: the side of a cliff in Alaska.
04 August 2015, 07:11 AM ET
Ancient mammal-like reptiles that once grazed across the globe may have possessed many of the fighting tactics seen in modern herbivores, including head butting and attacks with giant fangs.
03 August 2015, 01:35 PM ET
A soft-bodied, fernlike creature reproduced in Earth's ancient oceans about 565 million years ago, making it the earliest known example of procreation in a complex organism, a new study finds.
03 August 2015, 09:18 AM ET
A recent photo contest highlights images captured by ecologists in the field.
03 August 2015, 07:05 AM ET
The winning photos from a recent ecology photo contest prove that Mother Nature is always ready for her close-up.
02 August 2015, 10:02 AM ET
When it comes to sex, are butterflies as nurturing and gentle as they appear to be, or is there a more aggressive side to their mating?
31 July 2015, 05:16 PM ET
A giant python, about as long as a shipping container, was captured in Everglades National Park in Florida earlier this month (July 9).
31 July 2015, 08:15 AM ET
While pursing his Ph.D. at the University of Pennsylvania, Steven Jasinski fulfilled a childhood dream: he discovered a brand new dinosaur.
30 July 2015, 04:51 PM ET
Getting people to pay attention to a huge, global problem is easier when you have an enormous billboard at your disposal.
30 July 2015, 02:00 PM ET
An emerging infectious fungus that causes salamanders to die in droves could soon land on North American shores, scientists warn.
30 July 2015, 12:55 PM ET
Money from sports-hunting permits can fund protected parks that shelter wildlife and engage local communities in animal protection, but does paying such exorbitant fees actually help or hurt wildlife conservation?
29 July 2015, 10:11 AM ET
Jia Jia, a female giant panda, recently set new Guinness World Records for being the oldest panda in captivity. Here are photos of Jia Jia and her fellow pandas at Ocean Park in Hong Kong.
29 July 2015, 08:14 AM ET
A gorgeous riot of color comes from a surprising source in the winning image of a PLOS Genetics photo contest.
29 July 2015, 01:14 AM ET
Can perky penguins survive as the oceans grow crowded?
28 July 2015, 06:43 PM ET
One of the last five northern white rhinoceroses in the world has died. Three females and one male are left.
28 July 2015, 04:24 PM ET
A female panda in Hong Kong celebrated her 37th birthday today (July 28), becoming the oldest panda in captivity, and setting two new Guinness World Records in the process.
28 July 2015, 11:21 AM ET
Polar bears are known to be excellent swimmers, but new research suggests that they are also superb divers.
28 July 2015, 10:02 AM ET
Secret structures hidden within the serrated teeth of Tyrannosaurus rex and other theropods helped the fearsome dinosaurs tear apart their prey without chipping their pearly whites, a new study finds.
28 July 2015, 03:06 AM ET
The menu says snapper, or grouper, or even puffer fish — but what is really on your plate?
27 July 2015, 04:15 PM ET
When you order fish at a restaurant, you may not be getting what you think. The F.D.A. approves lists of fish species that can be grouped into labels such as snappers and groupers. The International advocacy organization Oceana explains.
23 July 2015, 06:27 PM ET
The mighty megafauna of the last ice age, including the wooly mammoths, short faced bears and cave lions, largely went extinct because of rapid climate-warming events, a new study finds.
23 July 2015, 02:04 PM ET
The oldest snake fossil on record looks almost like a modern snake, except for one glaring difference: It has four feet, each with five digits, a new study finds.
23 July 2015, 02:02 PM ET
Snakes used to have four legs, according to a roughly 120-million-year-old fossil from northeastern Brazil.
23 July 2015, 08:05 AM ET
During the dinosaur age, ichthyosaurs — large marine reptiles that look like dolphins — flourished in prehistoric oceans. But as competition in these areas grew, ichthyosaurs lost both territory and species before gradually going extinct, a study finds.