Kristina Gjerde studies the law of the high seas -- the 64 percent of our ocean that isn't protected by any national law at all. Gorgeous photos show the hidden worlds that Gjerde and other lawyers are working to protect from trawling...

You often see people wearing surgical masks or respirators during flu season, but do they even do anything?

It seems like birds would want to hide their eggs, but there are hundreds of species that lay blue to blue-green eggs. Thanks to some clever experiments, we’re finally starting to understand why birds might benefit from conspicuously...

Society has a set of stories it tells itself about who refugees are and what they look like, says documentarian and TED Fellow Feras Fayyad. With his films, he's on a mission to separate the facts about refugees from fiction, as a form...

Until now, researchers have assumed that healthy cells switch off the enzyme telomerase as a way to protect themselves from turning cancerous. But a new study suggests the enzyme may have a healthier role than we previously thought....

Astringent plant chemicals called tannins bind proteins on mucous membrane and skin, generating a prickly, puckery mouthfeel from foods and letting us “tan” skins into...

Photographer Monika Bulaj shares powerful, intimate images of Afghanistan -- of home life, of ritual, of men and women. Behind the headlines, what does the world truly know about this place?

If we take care of the land, the land takes care of us, says Indigenous leader Valérie Courtois. As climate change continues to devastate the planet, Indigenous guardians are helping to honor our responsibility to the land, monitoring...

The same enzyme that used to save us is now killing us because the body reactions it catalyzes now cause more harm than good.

You might have done it accidentally or intentionally but one thing is clear: Don't stare at the the sun! Hank Green explains why.

The One That Got Away (Size Matters)

We've been spending a lot fo time thinking about one vaccine: the COVID vaccine. But vaccines have been around since long before SARS-CoV-2 showed up, so let's learn about some of those other vaccines.

Brain training games claim to improve your memory, attention, and reasoning skills. Some even say they help prevent the onset of dementia. Problem is, they don't really work.

The ocean is often thought of as a victim of climate change, in need of human protection. But ocean expert Susan Ruffo says that mindset needs to shift. From storing carbon to providing protection to coastal communities, Ruffo highlights...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Sexting, like anything that's fun, runs its risks -- but a serious violation of privacy shouldn't be one of them....

When faced with a parent suffering from Alzheimer's, most of us respond with denial ("It won't happen to me") or extreme efforts at prevention. But global health expert and TED Fellow Alanna Shaikh sees it differently. She's taking three...

On Thursday, December 4th 2014, NASA will conduct the first test flight of its new deep space crew vehicle, going farther than any passenger vehicle has in over 40 years. Get ready to meet Orion!

We tend to focus on the brain in psychology, but it's part of an entire system! Other organs, even your liver, play a big role in psychological health.

From MMR boosters to tetanus, you'll probably get a lot of shots in your life. And one thing you might notice is that some of them don't feel like much, but some of them can make your arm reallllly sore! Why is that?

There's a vaccine being developed now that would protect you against every strain of the flu— even ones that don't exist yet. But influenza is constantly mutating, so is a universal vaccine even possible? And how do you design a vaccine...

This week, a new comet will make its first visit to the inner Solar System, just barely missing Mars (we hope). SciShow Space News takes you there!

Scientists have been searching for the hard-to-find nests of Storm Petrels in order to protect them, but first, they'll have to follow their nose.

Hank brings us the story of Elizabeth Blackburn, the Nobel Prize-winning Australian woman who discovered telomeres and telomerase, and helped scientists begin to understand the process of aging at a genetic level.

This whimsical wrap-up of TED2006 -- presented by Einstein, the African grey parrot, and her trainer, Stephanie White -- simply tickles. Watch for the moment when Einstein has a moment with Al Gore.