Despite alligators ruling the swamplands of the Everglades for millennia, the last 500 years have brought deadly new predators that challenge their reign. And the origins of these international invaders are just as unexpected as their...

You might expect to find these fish at the core of an ancient, distant asteroid, but we find them instead on Earth. That doesn’t mean they aren’t special, though. In fact, their immune systems may be the key to unlocking a new treatment...

You probably think the appendix is a useless organ left over from our evolutionary past, but it turns out it may be doing something important after all.

Invasion of the Yellow Crazy Ants!

Sure, honeybees make delicious honey. But have you ever heard of propolis, the spitty glue they use to mummify intruders?

Both male and female Cimex lectularius feed on humans.

Inside you, a daily battle is being waged and your immune system is at the frontline. Most of the time, you may not even notice it's there, but over the course of your life your immune system will guard you against hundreds of...

Do you remember having a cold in 5th grade? Or the flu a couple years ago? Your immune system does. Our bodies hold many levels of immune defense. Millions of B cells and T cells and antibodies are constantly on patrol for germs and...

Every time you breathe, air travels down the trachea, through a series of channels, and then reaches little clusters of air sacs in the lungs. These tiny sacs facilitate a crucial exchange: allowing oxygen from the air we breathe into...

King Arthur has risen again and again in our collective imagination, along with his retinue of knights, Guinevere, the Round Table, Camelot, and of course Excalibur. But where do these stories come from, and is there any truth to them?...

Howcast - Check out part 2 of this Captain America: Super Soldier walkthrough and beat chapter five with this online demo.

Battle for Rome - Were Barbarian invasions a Peaceful settlement or Violent conquest

Chevauchée, 1355 AD Battle of Poitiers Part 1 of 2

In the centuries following the Mauryan Empire, India experienced periods of political disunity. In the fourth century AD, however, the Gupta dynasty emerged, ushering in a period of peace, prosperity, and cultural revival. During this...

Battle Of Mohi, 1241 AD Mongol Invasion of Europe

This video describes the events leading up to and during the Battle of Agincourt, where King Henry V of England led his outnumbered and weary army to a stunning victory over the French forces. Despite facing challenges and being cut...

This video describes the historical events of the early 13th century, focusing on the Mongol invasion led by Genghis Khan and the subsequent battles with various kingdoms and alliances. It highlights the strategic brilliance of Mongol...

This video explores five fun facts about castles.

Nile River Valley Civilization examines how the Nile River Valley Civilization was able to flourish by analyzing the benefits of its location.

0:00 Intro 0:43 Casino Ad 1:58 The Genocide Maori History, Moriori, Haka, New Zealand Wars, New Zealand History, Maori, Haka, Musket Wars, Moriori Genocide

Ancient shark in 3-D, scary robofish, skin cancer answer, and crops in deep water. It’s 4 Awesome Discoveries You Probably Didn’t Hear About.



3-D reconstructions show how ancient sharks found...

Mulan is one of the cultural pillars of a millennial westerner's upbringing. But, where does this story come from? How did we go from an ancient ballad to a movie with Eddie Murphy?

Sea Lamprey... and then tests out if they will bite! Watch as Mario places the Sea Lamprey on Coyote's body to see if these giant bloodsucking parasites will take a bite. Get ready to watch the strong suction power of the Sea Lamprey!

The major challenge facing the modern world of vaccines is to get them to people right at the end of the line – those people who still don’t have access to effective treatment. It’s not always remote villages way out in the country, it...