Leeches are bloodsucking parasites, and you wouldn't think they're great at protecting other species. Yet for some conservationists, these little vampires are one of the best tools available for conserving endangered and threatened...

What happens when the fish that sustain a community start disappearing? Environmental activist Lamin Jassey shares how industrial fish meal factories are devastating local waters, livelihoods and health in The Gambia — and how...

In 1952, polio was everywhere: killing or paralyzing roughly half a million people annually. Yet just 10 years later, paralytic polio cases in the US dropped by 96% and we were on track to get rid of polio for good. But in recent years,...

Earth didn't have water when it formed, but it does now! How did it get wet?

How to See Without Glasses

Which Bear Is Best?

In the debut of TED's new "On the Spot" rapid-fire Q&A format, Emmy-winning television superstar and drag icon RuPaul Charles answers questions about bravery, brilliance and more — all with his signature wit and wisdom. Get a glimpse...

There are many conventional ways to treat oil spills, both at sea and on land, but some of the strangest include human hair and chicken manure.

The Moon is typically 380,000-ish kilometers from the Earth, so it doesn't seem like they have that much of a direct influence on one another. However, the presence of hematite on the lunar surface suggests our planet is causing the Moon...

Achilles, just slain in the Trojan War, arrives in the Underworld and is greeted by Sibyl of Cumae— a prophetess and also the realm’s local guide. Though it gets a bad rap, Sibyl is determined to prove to the newcomer that hell is...

In the 1970s, astronomers discovered a mysterious source of gamma rays that, 50 years later, still hasn’t revealed all of its secrets.

In 1991, a subatomic particle smashed into Earth's atmosphere traveling faster than anything humans can replicate. It's the most energetic particle detected to date, and maybe even the fastest (except light itself). Astronomers call it...

We know that gravity must cause clocks to run slow on the basis of logical consistency. And we know that gravity DOES cause clocks to run slow based on many brilliant experiments. But I never explained WHY or HOW gravity causes the flow...

It sounds like such an incredible fact. “Our own cells are outnumbered by our microbes 10 to 1!” I don’t remember where I first heard it. But I read it in science papers and articles by journalists, so I believed it without question. I...

Some swear they're cursed to be hunted by mosquitos while their close-by companions are regularly left unscathed. Are mosquitos really attracted to some people more than others? And if so, is there anything we can do about it? Maria...

Explore the four biomolecules and their importance for organisms and the structure and function of their cells! This 2023 UPDATED Biomolecules Amoeba Sisters video has some more detail and improved art from the 2016 Amoeba Sisters...

If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?

Did you know that your body's fight-or-flight response to danger may, in part, come from inside your bones? Plus, another study suggests that vaping may impair to your ability to fight off lung infections.

You know how moths like to fly into lamps or crawl all over your tv screen at night? Why do they do this?! The answer is more complicated than you might think...

Two new studies challenge what we thought we knew about the first humans in the Americas. Could people have been on these continents 10 to 15 thousand years earlier than archaeologists previously thought? Join Stefan Chin and learn more...

Sometimes researchers make similar breakthroughs at similar times and that leads to great rivalries (think electricity). But what about the times that these researchers choose to collaborate? Hosted by: Hank Green (he/him)

Friday's jobs report offered mixed signals about the state of hiring, but

one thing was clear: more people are trying to get back into the
labor
force. Supply chain issues are one key challenge as companies c
ompete...

Black holes are the result of absolute gravitational collapse of a massive body: a point of hypothetical infinite density surrounded by an event horizon. At that horizon time is frozen and the fabric of space itself cascades inwards at...

Hydrothermal vents are some of the most extreme environments on the planet. But in 2000, scientists discovered a vent unlike any other, one that spews white smoke and is 10 times older. And some think it may help us understand how all...