Rebuilding tissues

Behold, a "ghost heart!" All of the living cells have been washed off this pig heart, so it can provide a scaffolding for human stem cells to grow a new, working heart. So far, scientists at the Texas Heart Institute have successfully implanted tissue-engineered hearts like this one into rats and pigs, and they hope to someday do the same in humans. Read about this and other bio-engineering experiments in the new TED Book, “Super Cells.” Photo courtesy of RMR Labs, Texas Heart Institute.

Peter Attia: What if we were wrong about diabetes?

Both a surgeon and a self-experimenter, Peter Attia hopes to ease the diabetes epidemic by challenging what we think we know and improving the scientific rigor in nutrition and obesity research.

TED TALKS

Listening to color

Artist Neil Harbisson was born completely color blind, but these days a device attached to his head turns color into audible frequencies. Instead of seeing a world in grayscale, Harbisson can hear a symphony of color -- and yes, even listen to faces and paintings.

He is the first cyborg in the world recognized by a goverment.

(www.ted.com)