Singer, songwriter and actress Sara Ramirez is a woman of many talents. Joined by Michael Pemberton on guitar, Ramirez sings of opportunity, wisdom and the highs and lows of life in this live performance of her song, "Rollercoaster."

Because there are so many different types of penises among our evolutionary relatives, we didn’t know until a recent discovery whether they all had the same origin.

Negotiating thermostat settings can be really frustrating, but your officemate isn't trying to freeze you out on purpose. Stefan explains the science behind why people experience temperatures differently.

Fun fact: Stefan wears a...

Authentic dollar bills are equipped with many security features to make them difficult to forge. But that doesn't stop counterfeiters from trying to fool people with fakes. Luckily, anyone can help catch a counterfeit; all you need are a...

If you find a glowing rock, it probably doesn't mean you're the chosen one. If it's one of these five phenomena, it's quantum mechanics, not narrative significance.

Cha
pters

View all

FLUOR
ESCENCE
...

TV news anchor Lee Thomas thought his career was over after he was diagnosed with vitiligo, an autoimmune disorder that left large patches of his skin without pigment and led to derision and stares. In a captivating talk, he shares how...

Eta Carinae A, a star that briefly held the title of the second-brightest star in the sky, has been dazzling astronomers for centuries. Learn more about this type of supermassive, mega-luminous star, known as a Luminous Blue Variable.

In 2008, the global financial crisis decimated Latvia. As unemployment skyrocketed, the government slashed public funding and raised taxes, while providing relief to the wealthy and large businesses -- all without backlash or protest...

It's your first day as Center Realm's official cartographer, and you've already got a big problem. Center Realm is home to three elder dragons: two ice, one fire, and they've lived in harmony for centuries. But scouts have sighted three...

Meet Todai Robot, an AI project that performed in the top 20 percent of students on the entrance exam for the university of Tokyo -- without actually understanding a thing. While it's not matriculating anytime soon, Todai Robot's success...

In the US, 80% of girls have been on a diet by the time they're 10 years old. In this honest, raw talk, neuroscientist Sandra Aamodt uses her personal story to frame an important lesson about how our brains manage our bodies, as she...

When camels drink, they do so at a rate that would kill most other animals. But where does all of that water go? Hint: It's not their humps!

Using three iPods like magical props, Marco Tempest spins a clever, surprisingly heartfelt meditation on truth and lies, art and emotion.

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...

A hostile artificial intelligence called NIM has taken over the world's computers. You're the only person skilled enough to shut it down, and you'll only have one chance. Can you survive and shut off the artificial intelligence? Dan...

Venom can kill ... or it can cure. In this fascinating talk, marine chemical biologist Mandë Holford shares her research into animal venom, from killer sea snails to platypuses and slow lorises -- and explores its potential to one day...

It seems like a terrible idea to destroy and rebuild your own brain, but that is exactly what some ground squirrels are doing all winter long.

You’re peeing when, suddenly, you’re shivering! What gives!?

Astounding feats of animal memory.

Join Jessi and Squeaks to learn about a few animals with extreme teeth!

From sauna pants to fat jigglers, people used to try to lose weight in some rather unconventional ways. They really did not work.

In this video Paul Andersen shows conceptual thinking in a mini-lesson on probability and prediction.

T
ERMS:
Cause - a thing that gives rise t
o an event
Ef
fect - an event
Relationship- interconnection betwe
en...

You've come a long way to compete in the great Diskymon league and prove yourself a Diskymon master. Now that you've made it to the finals, you're up against some tough competition. In round one, you'll face a single opponent and get to...

In this video Paul Andersen explains how the total energy of a system is the combination of kinetic, potential and internal energy of the objects. He then shows you how to calculate the kinetic energy, gravitational potential energy,...