A young chimpanzee sets out for a stroll in Tanzania's Mahale Mountains National Park.

Walking Chimps Move in Surprisingly Similar Ways to Humans

Motion-sensor studies showing how chimpanzees walk upright could help scientists better understand the evolution of bipedalism

An adult tammar wallaby on Kangaroo Island, Australia.

Mother Wallabies Are Delaying Births Due to Bright Lights

Marsupials exposed to artificial light had their babies a month later than those that spent nights solely lit by the stars and moon

Queen bumblebee, Bombus balteatus, foraging for nectar on the alpine wildflower Polemonium viscosum.

Bee Tongues Are Getting Shorter as Temperatures Warm

In Colorado, alpine bumblebee tongues are shrinking in response to shifting wildflower populations

It's OK, buddy. We're here to help.

Domestication Seems to Have Made Dogs a Bit Dim

Thanks to their relationship with us, dogs are less adept at solving tricky puzzles than their wolf relatives

A mother hummingbird in Arizona incubates her eggs under the indirect protection of her neighborhood hawk.

Hawks Act as Unwitting Muscle for Hummingbirds

In Arizona, hummingbirds seem to deliberately seek out bodyguard hawks to shield them from nest-robbing jays

Knut, the star of the Berlin Zoo, died due to swelling in his brain.

Knut the Polar Bear’s Mysterious Death Finally Solved

The famed Berlin Zoo bear suffered from an autoimmune disease that until now has only been known to occur in humans

"Flatties" might be more aptly nicknamed "fliers" for their ability to glide to safety should they lose their grip in tree canopies.

Gliding Spiders Found Falling From Tropical Trees

Flat-bodied spiders that live in the rainforest strike a Superman pose to take control of their free-falls

The larger Pacific striped octopus uses unique prankster shoulder-tapping techniques to lure shrimp prey within arms' reach.

Tropical Octopus Definitely Mates Beak-to-Beak

Larger Pacific striped octopus couples engage in a host of behaviors unheard of among other octopuses

A wasp larva perches on its hapless spider host.

Parasitic Wasps Turn Spiders Into Zombie Weavers

Arachnids injected with a potent neurotoxin are forced to create shiny new web cradles for wasp larvae

Hamsters seem to have a more optimistic outlook when they have access to creature comforts.

Hamsters Are Optimists When They Live in Comfy Cages

Pet hamsters that enjoy habitats full of toys and fluffy bedding make more upbeat decisions than those in stark enclosures

Boa constrictors seem to deliver death not through suffocation, but by cutting off blood flow to the heart and brain.

Boa Constrictors Kill By Stopping Blood Circulation

The popular belief that boas and other constricting snakes deal death by suffocation seems to be a flawed assumption

An Anopholes mosquito, the vector for malaria, taking a blood meal from a tasty human.

Mosquitoes Can Carry, and Deliver, a Double Dose of Malaria

Insects that are already carrying one strain are more likely to pick up a second infection and harbor higher numbers of parasites


Bumblebees Are Getting Squeezed by Climate Change

Across North America and Europe, the insects are just not keeping up with shifting temperatures

Unlike the tails of almost all other animals, seahorse tails are more like square prisms than cylinders.

Why Seahorses Have Square Tails

Engineers show that the animals' prism-like tails are mechanically superior to cylindrical ones

A reconstruction of "grandfather turtle."

This Ancient Creature Shows How the Turtle Got Its Shell

The 240-million-year-old "grandfather turtle" may be part of the evolutionary bridge between lizards and shelled reptiles

A customs officer in Thailand examines specimens from a three ton ivory seizure, estimated to be worth $6 million.

DNA and Databases Help Untangle the Web of the Illegal Wildlife Trade

Two new data-driven approaches help identify key hotspots for poaching and trafficking

Scientists found what appear to be red blood cells in this claw from an unidentified theropod dinosaur.

Dinosaur Soft Tissue Recovered From Eight Cretaceous-Era Fossils

New sampling methods yielded cells and fibers from relatively ordinary fossils, broadening the possibilities for paleontology

The Grevy's zebra (left) and the plains zebra may be tough to tell apart—until you examine their dietary preferences via their poop.

Big African Animals Are Pickier Eaters Than We Imagined

To the surprise of ecologists, plant-eaters manage to coexist on the savanna by each choosing different favorite foods

More exotic items are kept on permanent display.

The Nation’s Stash of Lost Luggage Finds a New Life in This Alabama Town

Buy yourself a new wardrobe, iPad or other oddities at the Unclaimed Baggage Center

Investigating the Case of the Earliest Known Murder Victim

A 430,000-year-old skull discovered in a Spanish cave bears evidence of deliberate, lethal blunt force trauma

Page 3 of 83