Pranav Mistry is the inventor of SixthSense, a wearable device that enables new interactions between the real world and the world of data.

At age 9, while traveling with his family and being "roadschooled," Birke Baehr began studying sustainable and organic farming practices such as composting, vermiculture, canning and food preservation. Soon he discovered his other passion: educating others -- especially his peers -- about the destructiveness of the industrialized food system, and the alternatives.

Mary Roach delves into obscure scientific research, some of it centuries old, to make 10 surprising claims about sexual climax, ranging from the bizarre to the hilarious.

Death, the afterlife, and now sex -- Mary Roach tackles the most pondered and least understood conundrums that have baffled humans for centuries. 

Heavy water,also known as deuterium oxide or 2H2O or D2O, is a form of water that contains a higher than normal amount of the hydrogen isotopedeuterium, (also known as "heavy hydrogen") rather than the common hydrogen-1 isotope that makes up most of the hydrogen in normal water.


Some or most of the hydrogen atoms in heavy water contain an extra neutron, causing each hydrogen atom to be twice as heavy as a normal hydrogen atom. The increased weight of the hydrogen in the water thus makes it slightly more dense. The colloquial term heavy water is often also used to refer a highly enriched water mixture that contains mostly deuterium oxide but also contains some ordinary water molecules as well

edical illustrator and animator David Bolinsky has devoted his career to displaying scientific and medical concepts in a clear, fresh light. 

Since the earliest days of computer animation, he knew this art could be a powerful tool for explaining scientific concepts in ways that traditional medical illustration simply couldn't. Now, with XVIVO, the company he co-founded, he works with schools and with medical and scientific firms, turning complex processes into understandable, compelling films.

"The Inner Life of a Cell," highlighted at TED2007, represents the leading edge of medical animation, in both its technical achievement and its focus on compelling, memorable action. Created as part of the BioVision initiative to help explain cellular processes to students atHarvard's Department of Molecular and Cellular Biology, the clip has captured the imagination of the press -- and reportedly, of Hollywood.

On any given day we're lied to from 10 to 200 times, and the clues to detect those lie can be subtle and counter-intuitive. Pamela Meyer, author of Liespotting, shows the manners and "hotspots" used by those trained to recognize deception -- and she argues honesty is a value worth preserving.

There are several ways to make fire by mixing chemicals together. These chemical reactions can take several seconds to minutes to fully activate The video shows several different chemical fires.

Turns out humans aren't the only animals that can medicate themselves - many other animals have found ways to deal with illness by using natural remedies.

In a single year, there are 200-300 million cases of malaria and 50-100 million cases of dengue fever worldwide. in 2009, the Florida Keys suffered an outbreak of Dengue Fever, a fatal condition with flu-like symptoms, the first there since 1934.
A British biotech company called Oxitec thinks they have a solution to avoiding future outbreaks. They want to  genetically modify mosquitoes that would glow red when placed under a microscope, and carry a gene that causes new offspring to self-destruct.