Bats in North America are dying by the millions, and Dr. DeeAnn Reeder is leading scientists into the caves to find out why.

What's Causing Millions of North American Bats to Die? (2:05)

Madison Stewart is a shark conservationist, determined to protect the depleting Great Barrier Reef and the magnificent predators she grew up with. Here's how she confronts the shark fin soup market head on.

This Young Woman Will Stop at Nothing to End Shark Finning (3:05)

One of the most iconic burial sites in Britain was discovered in Amesbury, near Stonehenge: the Amesbury Archer. The archer got his name from the amount of arrow heads found in his grave.

This Burial Site Near Stonehenge Was Packed With Arrows (4:07)

To save a species from extinction, scientists scour the Panamanian jungle for the few remaining frogs. But will they be too late?

The Invisible Enemy Wiping Out Entire Species of Frogs (2:15)

After a series of political setbacks, Churchill retreats to his Kent country estate to recharge his batteries. It’s an idyllic family holiday, far from the ups-and-downs of frontline politics.

Rare Footage Shows a Warmer Side to Winston Churchill (0:57)

A female leopard uses her superior night vision to get closer to a herd of grazing impala. Just as she’s about to pounce, a hyena shows up revealing her position and taking away her element of surprise.

A Leopard’s Carefully Planned Ambush Is Ruined By A Hyena (3:51)

In the sea of Okhotsk, off Russia’s eastern coast, two types of whales are making a comeback: humpback whales and orcas. Both are drawn here in the summer to feast on the plentiful herring.

These Two Types of Whales Are Drawn to the Sea of Okhotsk (2:52)

Albert Einstein’s life in Long Island, New York, was an idyllic one. But he continued to harbor a tremendous amount of empathy for his compatriots who had remained in Nazi Germany.

Einstein’s Life in America Shown in Stunning Home Movies (2:00)

In the Egyptian museum, the mummified and fragile bodies of two baby girls are kept in special storage. Archaeologists believe they may have played a role in the burial ceremony of King Tutankhamun.

Why Were Mummified Babies Found in Tutankhamun's Tomb? (3:22)

By late September 1918, in a bid to contain the spread of the flu, the U.S. had made the decision to cancel the draft. It was too little, too late—in October alone, over 200,000 Americans were killed by the disease.

Did the Spanish Flu Impact America's Ability to Fight in WWI? (2:45)

In 1913, British Royalty would come in direct contact with a changing social order, thanks to a suffragette named Emily Davison. Her death at Epsom Falls would send shockwaves through the nation.

The Suffragette Who Was Killed by King George V’s Horse (2:06)

A wily old leopard is hiding in a gully waiting for the perfect moment to strike. Nearby, zebras and antelope graze contentedly, unaware of the threat they’re under

This Leopard Is Waiting for the Perfect Moment to Strike (3:26)

On September 2, 1935, Florida was hit by the most intense hurricane ever recorded—a category 5. Despite early warnings by the weather authorities, a calamitous loss of life shocked the nation

This 1935 Florida Hurricane Had a Devastating Impact (2:08)

Ancient Egyptians believed death was an extension of life, and had many of the same demands. That’s why tombs like those of Tutankhamun were packed with preserved foods like dates, meat, and poultry

Ancient Egyptian Tombs Were Crammed Full of Snacks (2:37)

The act of dive bombing during World War II was a death defying trial of skill and nerve. You aimed your plane down, four miles above the ocean and plummeted at speeds of up to 275 miles per hour

The Terrifying Physics of WWII Dive Bombing (3:43)

Formed over 20 million years ago, Iceland is the world’s largest volcanic island. It’s also an ideal window for anyone looking to take a peek into our geological past

Why Iceland Offers a Perfect Picture of Our Geological Past (2:12)

A trumpet fish swims along in its unusual vertical pose, while a stoplight parrotfish performs its reef-cleaning duties—just some of the dazzling marine life that inhabits Salt Pier

The Dazzling Marine Life of the Salt Pier in Bonaire (2:07)

The Canyon Diablo may be one of the oldest objects you’ll ever see on our planet. It’s a meteor fragment that radiometric dating has estimated to be about 4.5 billion years old

Is This Rock Fragment the Oldest Object in the World? (2:13)

A series of skeletons discovered in a cave complex in South Africa are threatening to change everything we thought we knew about human evolution. It’s a new species which researchers have dubbed Homo naledi

A Brand New Humanoid Species Is Discovered In a Cave (3:42)

A red fox stumbles across a treasure trove of nutrition: the carcass of a freshly killed yak. But nearby tracks reveal that its killer isn’t far away—and wouldn’t take kindly to an intruder

A Fox’s Joy in Finding Fresh Meat Is Short-lived (3:16)

A team of researchers are on the trail of a black rhino bull whose transmitter has failed. To find him, they’ll rely on his spoor: clues such as urine trails, footprints and food he may have grazed on

The Intricate Skill That Goes Into Tracking a Rhino (3:58)

The speed of a hairy frogfish’s bite is the result of a vacuum in its mouth that can suck in its prey in just 1/6000th of a second. It’s so fast that even slow-motion video struggles to capture it

This Hairy Frogfish’s Bite Is Too Fast for Slow-motion (1:20)

A troop of Kinda baboons traverse across grassy plains to get to a nearby woodland. Because the grass is too high for them to see over, they rely on a curious strategy: bouncing instead of running

Bouncing Baboons Navigate Tall Grass (2:20)

A Former King of Britain Paid a Visit to Nazi Germany (3:02)

In Gabon, a local group of conservationists are sowing the seeds of ecotourism. Their goal is to finance the protection of not just the local gorillas, but also the rain forest itself

How Ecotourism Can Save Both Gabon’s Forests and Its Gorillas (3:18)

Britain was racked by devastating economic hardship in the 1930s and ordinary people began to take their anger out on what was seen as the ultimate symbol of entitlement: the British Royal family

The 1930s Were Not a Good Time for the British Royal Family (3:05)

In Britain, the Great War brings suspicion to all things German—including the British Royal family. In a bid to mend their image, the Royals change their German name to a more English one: Windsor

Why the British Royal Family Made a Last Name Change During WWI (3:40)

HMS Queen Elizabeth is in its own unique class of aircraft carriers. For example, it’s the only warship with two islands on its deck—one to steer the ship and the second for flight control

HMS Queen Elizabeth Is Unlike Any Other Warship (1:17)

Two African Rock Pythons Hone in on Their First Kills (3:48)

A class to teach orphan orangutans how to forage in flooded areas sees every orangutan develop his or her own technique. One enterprising adolescent even figures how to use a coconut shell to gather water

Young Orangutan Learns How to Scoop Water (2:49)