In this video Paul Andersen shows conceptual thinking in a mini-lesson on boundary and initial conditions within systems.

Boundary conditions - the dividing line between system and enviro
nment
Initial condition - the...

How Long Can You Balance a Pencil

When you see someone yawn, you're probably pretty likely to follow suit. But what makes it so contagious?

Freudian slips are actually an artifact of how your brain processes language!

Technology architect Fadi Chehade helped set up the infrastructure that makes the internet work -- essential things like the domain name system and IP address standards. Today he's focused on finding ways for society to benefit from...

"The computer is an incredibly powerful means of creative expression," says designer and TED Fellow James Patten. But right now, we interact with computers, mainly, by typing and tapping. In this nifty talk and demo, Patten imagines a...

Join Rev. James Forbes at the dinner table of his Southern childhood, where his mother and father taught him what compassion really means day to day -- sharing with those who need love.

Onstage at TED2012, Jack Choi demonstrates a powerful tool for training medical students: a stretcher-sized multi-touch screen of the human body that lets you explore, dissect and understand the body's parts and systems.

Want to connect with a depressed friend but not sure how to relate to them? Comedian and storyteller Bill Bernat has a few suggestions. Learn some dos and don'ts for talking to people living with depression -- and handle your next...

Ever wondered what causes that strange tingling feeling? Well, settle in as Quick Questions explains how it works. Just be careful how you sit.

Athlete, actor and activist Aimee Mullins talks about her prosthetic legs -- she's got a dozen amazing pairs -- and the superpowers they grant her: speed, beauty, an extra 6 inches of height ... Quite simply, she redefines what the body...

Why do some gatherings take off and others don't? Author Priya Parker shares three easy steps to turn your parties, dinners, meetings and holidays into meaningful, transformative gatherings.

Table saws, while quite useful for woodworking, are also dangerous machines, which is why some incredible safety mechanisms have been invented to help you remain one with your body parts.

In this quick, fun talk, astronaut Cady Coleman welcomes us aboard the International Space Station, where she spent nearly six months doing experiments that expanded the frontiers of science. Hear what it's like to fly to work, sleep...

There's a March for Science happening all over the world

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This is a video about how science is both inhere

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We worry that IM, texting, Facebook are spoiling human intimacy, but Stefana Broadbent's research shows how communication tech is capable of cultivating deeper relationships, bringing love across barriers like distance and workplace rules.

The workplace is often presented as a meritocracy, where you can succeed by putting your head down and working hard. Wall Street veteran Carla Harris learned early in her career that this a myth. The key to actually getting ahead? Get a...

How do you engineer stealth? Sneak a peek at the methods employed to hide aircraft and boats from detection.

Hank introduces us to the man behind the periodic table - the brilliant Russian chemist Dmitri Mendeleev.

In this touching talk, Ash Beckham offers a fresh approach to empathy and openness. It starts with understanding that everyone, at some point in their life, has experienced hardship. The only way out, says Beckham, is to open the door...

Today we’re going to talk about how we compare things that aren’t exactly the same - or aren’t measured in the same way. For example, if you wanted to know if a 1200 on the SAT is better than the 25 on the ACT. For this, we need to...

Today Craig finishes up our series on U.S. Government and Politics by talking about both the least and most important aspect of government: foreign policy. Foreign policy is important because it has the potential to affect the largest...

In politics, representation matters -- and that's why we should elect leaders who reflect their country's diversity and embrace its multicultural tapestry, says Sayu Bhojwani. Through her own story of becoming an American citizen, the...

Andy Hobsbawm shares a fresh ad campaign about going green -- and some of the fringe benefits.