Some 80 to 90 percent of undersea creatures make light - and we know very little about how or why.

Bioluminescence expert Edith Widder explores this glowing, sparkling, luminous world, sharing glorious images and insight into the unseen depths (and brights) of the ocean. 

Edith Widder combines her expertise in research and technological innovation with a commitment to stopping and reversing the degradation of our marine environment.

TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes. TED stands for Technology, Entertainment, Design, and

TEDTalks cover these topics as well as science, business, development and the arts.