Team works on IVF procedure on a rhino.

First In Vitro Embryos Could Save The Northern White Rhino

Scientists harvested the eggs of southern white rhinos to breed with the last male northern white rhino via in vitro fertilization.

  Animals

0:43Cecil the lion.
University of Oxford

Cecil The Lion's Son Xanda Met The Same Fate As His Father

0:58The mascots of Louisiana State, Missouri, Auburn and Clemson (clockwise from top left)
Getty Images

NCAA Tigers Are Teaming Up To Protect Tigers In The Wild

0:56A woman holds a dog.
Humane Society International

Over 140 Dogs Were Rescued From A Meat Farm In South Korea

1:01T. rex in computer simulation
University of Manchester

T. Rex Was Probably Much Slower Than You Thought

0:48A jumping spider sits on top of a plant
Artur Rydzewski / CC BY 2.0

Some Spiders Mimic Ants To Avoid Being Devoured

0:55Corals on the Great Barrier Reef
Toby Hudson / CC by SA-3.0

Reef Fish Make Riskier Choices If They've Been Exposed To Oil

1:14A group of horses.
Getty Images

Congress Is Working To Get Horses From Stables Onto Dinner Tables

1:10Close-up of tardigrade under a microscope
Goldstein Lab / CC by 4.0

Tardigrades Might Be The Sole Survivors Of The Apocalypse

1:10Raven
Will Brown / CC BY 2.0

Ravens Have The Rare Ability To Plan Ahead — Almost Like Humans

1:36Zebra fish embryo under the microscope
American Chemical Society

How To Freeze The Decline Of Earth's Endangered Species

1:24A tower of fire ants
Georgia Tech

Fire Ants Can Build Roiling Ant Towers To Get Around

1:04Bear walks through Lamar Valley in Yellowstone National Park
Neal Herbert / CC BY 1.0

Hunter Baits Might Be A Good Chunk Of Bears' Diets

0:46A black palm cockatoo perches on a branch
Laura Wolf / CC BY 2.0

These Percussive Cockatoos March To The Beat Of Their Own Drum

1:13A model of a woolly mammoth is displayed in the Royal BC Museum in Victoria, Canada
Flying Puffin / CC by SA 2.0

PayPal Founder Invests $100,000 To Bring Back The Woolly Mammoth

1:04Honey bees
Polly Dot / CC0

Scientists Finally Know How One Common Pesticide Is Harming Our Bees

0:56A mosquito feeds on blood
Getty Images

Scientists Are Inventing The Most Sci-Fi Ways To Wipe Out Mosquitoes

0:53Tilikum, the former SeaWorld orca and subject of the documentary "Blackfish."
Getty Images

SeaWorld Is Being Investigated For Its Response To 'Blackfish'

1:22A grizzly bear
The National Park Service

Yellowstone Grizzlies Are Losing Their Endangered Species Protection

0:55Dogs in a cage
Humane Society International

Despite Ban Rumors, The Yulin Dog Meat Festival Is Still Happening

0:59Skippy the Maine Coon waits to be judged at the 'Supreme Championship Cat Show"
Getty Images / Matt Cardy

How Did Cats Become Domesticated? Ancient DNA Gives Us Some Clues

0:47A Great Dane puppy being rescued
The Humane Society of the United States

84 Great Danes Rescued From 'Squalid' Puppy Mill

1:26A chimpanzee sits in a cage on the back of a truck
Getty Images / Justin Sullivan

Only 72 Of Nearly 600 Lab Chimpanzees Have Been Moved To Sanctuaries

0:44A fossilized wooly mammoth skeleton standing in Summers Place Auctions in England
Getty Images / Peter Macdiarmid

Animals Can Be Declared De-Extinct ... But How Does That Work?

1:00A Galápagos tortoise faces the camera.
Paul Krawczuk / CC BY 2.0

A Galápagos Tortoise Species Thought To Be Extinct Has Resurfaced

0:45A man walks dogs through the street
Getty Images / Brian Harkin

A 'Highly Contagious' Dog Flu Has Re-emerged In The US

0:53Green sea turtle swims
Getty Images

Turtles On The Great Barrier Reef Have Human Medication In Their Blood

1:19Wild horses
Getty Images

Trump's Proposed Budget Could Threaten An American Icon

0:55An adult flamingo standing amongst chicks
Getty Images / Blazquez Dominguez

Scientists Tackle The Big Question: How Flamingos Sleep On One Leg

1:09A tray of fish on display
Getty Images / Ahmad Khateib

A Company's Plan To Fix Fisheries Has Scientists Feeling Skeptical

1:28Blue Whale in the water
Silverback Films / BBC

Blue Whales Weren't Always The Giants They Are Today