Humans judge each other within 33 milliseconds of seeing each other! We learn better if we think we have to teach someone else, and video games are good for us!

Fun with Ferrofluid

The first time scientists found exoplanets, they were orbiting something very different from our sun: a pulsar.<br/>

Paul Andersen describes his philosophy for group size.<br/>
One is for learning, active a<br/>nd private.
Two is for teachi<br/>ng, it goes both ways.
Three <br/>is for working, the jobs divided.
Four is for nothing but wasting the days.

There are a lot of resources given by nature for free -- all we need is our sensitivity to see them and our creativity to use them, says architect Anna Heringer. Heringer uses low-tech materials like mud and bamboo to create structures...

Mr. Andersen describes the two portions of the AP Biology Test. Tips for answering multiple choice and free response questions are included. Sample questions from old AP tests are also included.

Astronomers have found a new celestial object, and it's moving really, really fast!

In this video Paul Andersen shows conceptual thinking in a mini-lesson on material properties.


TERMS
Structure - parts in a mater
ial object
Function - an activity or purp
ose for a thing
Properties - any traits...

Stefan and Alexis are headed to Olympic National Park in Washington state to bring you some of the coolest geology stories there. This week, they explore why Mount Olympus should be taller than Mount Everest.

Just how small are nanomaterials? And what can we do with stuff that small? Today we’ll discuss some special properties of nanomaterials, how some can change at different sizes, and the difference between engineered nanomaterials and...

Jedidah Isler first fell in love with the night sky as a little girl. Now she's an astrophysicist who studies supermassive hyperactive black holes. In a charming talk, she takes us trillions of kilometers from Earth to introduce us to...

Exorings are pretty elusive, but we’ve already found what might be the first set of exorings, and if we find more, we’ll have a treasure trove of new information.

Imagine a set of electronics as easy to play with as Legos. TED Fellow Ayah Bdeir introduces littleBits, a set of simple, interchangeable blocks that make programming as simple and important a part of creativity as snapping blocks together.

Astronomers study a lot of gorgeous things, but nebulae might be the most breathtakingly beautiful of them all. Nebulae are clouds of gas and dust in space. They can glow on their own or reflect light from nearby stars. When they glow...

Product designer Eben Bayer reveals his recipe for a new, fungus-based packaging material that protects fragile stuff like furniture, plasma screens -- and the environment.

Why is 'x' the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer.

What do you do with an outdated encyclopedia in the information age? With X-Acto knives and an eye for a good remix, artist Brian Dettmer makes beautiful, unexpected sculptures that breathe new life into old books.

Our knowledge of specific technologies or techniques can sometimes be lost to time. And that can be because of changing economic conditions, or, sometimes, it's because the technology was so deadly that only a few were allowed to know it.

In the first mission of its kind, Deep Impact’s goal was to teach us about the interior of comets...by blowing a hole in the side of one!

You may have heard of the first interstellar object observed in our solar system, but did you know there's more than one? And speaking of icy rocks, new research suggests the ocean under the icy crust of Enceladus could be more dynamic...

It seems the more we learn about black holes, the more there is to find out. In this case, what in the universe could have put one on its side?

Today on Crash Course Astronomy, Phil dives into some very dark matters. The stuff we can actually observe in the universe isn’t all there is. Galaxies and other large structures in the universe are created and shifted by a force we...

Hank introduces us to the framework of our bodies, our skeleton, which apart from being the support and protection for all our fleshy parts, is involved in many other vital processes that help our bodies to function properly.

At Serious Play 2008, Charles Elachi shares stories from NASA's legendary Jet Propulsion Lab -- including tales and video from the Mars Rover project.