Hostile World • episode "S1E4" • Inside the Human Body

58:44

It’s 4am, and the big test is in 8 hours. You’ve been studying for days, but you still don’t feel ready. Should you drink another cup of coffee and spend the next few hours cramming? Or should you go to sleep? Shai Marcu defends the latter option, showing how sleep restructures your brain in a way that’s crucial for how our memory works.

TED-Ed • Health

88:29

An ambitious account of the story of human physiology in a feature-length dramatised documentary. Harnessing the magic of the most modern visual effects, we tell the story of the human body—inside and out—as it lives, grows, and dies on this predestined journey we call life. This unique National Geographic docudrama traces the life of a man, Adam, from the Cradle to the Grave, explaining the science behind our highs and lows, the rites of passage we all go through and exploring the inner workings of our bodies and how they change through time. The 90-year-old narrator, Adam, reflects on his life from conception through boyhood, adolescence and beyond, revealing the events that shape him. Along the way we meet the class bully, Adam's first love and the sergeant major preparing him and fellow recruits for Vietnam. With the aid of stunning computer-generated visuals, we go under the skin to reveal how Adam's body responds to major life events, and his story is told in dramatic scenes from the 1950s to the present day.

2016 • Health

10:47

The human immune system is the most complex biological system we know, after the human brain, and yet, most of us never learn how it works. Or what it is. Your immune System consists of hundreds of tiny and two large organs, it has its own transport network spread throughout your body. Every day it makes hundreds of billions of fresh cells. It is not some sort of abstract entity. Your immune system is YOU. Your biology protecting you from the billions of microorganisms that want to consume you and from your own perverted cells that turn into cancer. It's so manifold that it is impossible to cover in one video, so we’ll make a series looking at different aspects of it. Today, what happens when your body is invaded and your first lines of defenses are engaged in a fight for life and death?

2021 • Health

237:14

Explores the history behind white supremacy, including accounts of conquest, genocide and slavery from around the world. (4 parts merged into one)

2021 • Health

16:48

The coronavirus disease is spreading at frightening speeds from Wuhan, China, to the rest of the world. How did this virus develop, and how close are we to finding an effective vaccine?

Breakthrough • 2020 • Health

3:24

There’s a factory inside you that weighs about 1.4 kilograms and runs for 24 hours a day. It’s your liver: the heaviest organ in your body, which simultaneously acts as a storehouse, a manufacturing hub, and a processing plant.

TED-Ed • Health