Science Highlights

Learn about an astronaut's experience when he spacewalks, like the speed, various temperatures and their protective visor.

Dr. Michio Kaku explains that when you freeze human tissue, it may appear to be preserved superficially, but the ice crystals that form create massive cell damage, causing many cell walls to rupture.

Your brain is capable of more than you imagine. Learn how it adapts under pressure.

Do you exist? Is your entire life a hologram? According to some of these 10 mad scientific theories that might just be the case.

Dr. Michio Kaku explains how Einstein scoffed at the idea of quantum entanglement, calling it “spooky action at a distance.” And while it has in fact been proven to exist, this entanglement can’t be used to transmit any usable information.

Neil deGrasse Tyson talks about Death By Black Hole And Other Cosmic Quandaries. In this segment he speaks about his role in suggesting Pluto was not a planet - setting off scientific soul-searching about our solar system.

Dr. Michio Kaku explains that propelling a spaceship with photons would be like trying to energize a spaceship with a flashlight.

No one can get into elBulli, Ferran Adria's restaurant on the northeast coast of Spain. But plenty of people certainly try: every year, the restaurant receives over two million requests for only 8,000 seats during the six months it is open. For the other six months, Adria, who is proud to be called the "Salvador Dali of the Kitchen," travels, dreams, and creates at his "food laboratory" new inventions. In this video He presents his cooking methods using liquid nitrogen.

Dr. Michio Kaku explains that because of relativity, time moves faster the farther away you are from the center of the earth, meaning that your head ages slightly quicker than your feet.

White House Health Care policy adviser and NIH scientist Ezekiel Emanuel discusses high touch medicine with Royal Philips Electronics CEO Gerard Kleisterlee, and Pathfinders founder and director Tina Staley as part of the 2009 Aspen Ideas Festival.

Neurologist David Eagleman talks about the secret life of the brain and how it informs identity.

Learn and see stunning views of the remarkable galaxies in space, like Antennae Galaxies, Interacting Galaxies and Centaurus A.

Engadget takes a look at the University of Wisconsin aimed at allowing people to Tweet with a special Twitter-Brain interface.