This week Craig Benzine breaks down the different types of bureaucracies. I mean sure, they’re all part of the executive branch, but some work more directly with the president than others. Some bureaucracies exist solely to independently...

Unlike with many other viruses, once you get a herpesvirus you’re stuck with it for life. But just how do these master trespassers accomplish this feat?

As a novelist, Daniel Suarez spins dystopian tales of the future. But on the TEDGlobal stage, he talks us through a real-life scenario we all need to know more about: the rise of autonomous robotic weapons of war. Advanced drones,...

Humankind has been looking for the giant squid (Architeuthis) since we first started taking pictures underwater. But the elusive deep-sea predator could never be caught on film. Oceanographer and inventor Edith Widder shares the key...

From the world’s biggest land animal to a creature built more like a tank than a sub, meet seven mammals that you might not think can swim well, but do!

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TED follows Nicholas Negroponte to Colombia as he delivers laptops inside territory once controlled by guerrillas. His partner? Colombia's Defense Department, who see One Laptop per Child as an investment in the region. (And you too can...

If you’ve ever been scratching a dog and seen them do the kicky leg thing, it’s truly adorable. But it might not necessarily be a feel-good thing.

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...

Between you and the rest of the world lies an interface that makes up 16% of your physical weight. This is your skin, the largest organ in your body: laid out flat, it would cover close to 1.7 square meters of ground. But besides keeping...

When you think of surfactants, you might think of soaps, detergents and other man-made chemicals. But it turns out that some other animals utilize their own versions of these sudsy molecules.

When living underground leaves them vulnerable to attack, burrowing owls have a trick up their sleeve—they’ve developed the ability to mimic rattlesnake sounds that scare off predators!

Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy -- your immune system. The immune system's responses begin with physical barriers like skin and mucous...

From lemurs to lizards, ants to amphibians, sharks to chickens, hundreds of animals "play dead" as a survival tactic. But how and why do animals do this? Tierney Thys explains how this curious behavior, known as tonic immobility or TI...

Many organizations have made it their mission to expand the rights of Black Americans. The NAACP and the Urban League are examples of influential organizations with long histories. But a long history or extensive membership isn't always...

Hank gets to the more violent part of community ecology by describing predation and the many ways prey organisms have developed to avoid it.

In 1928, scientist Alexander Fleming returned to his lab and found something unexpected: a colony of mold growing on a Petri dish he’d forgotten to place in his incubator. And around this colony of mold was a zone completely and...

Jeanne Theoharis, a distinguished professor at Brooklyn College (CUNY) and author of The Rebellious Life of Mrs. Rosa Parks, explains that much of what we think we know about Rosa Parks is incomplete or wrong. Her book reveals Parks not...

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Welcome back to the FLUCTUS channel for a feature on the most technologically advanced Patrol Boats speeding at up to 50 knots to control coastal waters, from Reconnaissance and coastal surveillance to maritime law...

Howcast - Learn how to pick equipment from table tennis pro Tahl Leibovitz in this ping pong video from Howcast.

Howcast - Learn how to defend yourself against attacks with a knife in this Howcast training video with Krav Maga expert Rhon Mizrachi.

Howcast - Learn what is the best knife for self-defense in this Howcast video with expert Dan Delavan.

Howcast - Learn how to play defense from the pros at Game Breaker Lacrosse Camps in this Howcast video.

Howcast - Learn how to play goalie in lacrosse from the pros at Game Breaker Lacrosse Camps in this Howcast video.