What do crochet and coral have in common?

Geometry of course!

Although mathematicians claimed that hyperbolic space could not be seen or demonstrated, Margaret Wertheim shows us many examples of these beautiful shapes in nature as well as in crochet during her talk presented on TED tv.

Through math, marine biology, feminine handicraft, environmental activism and a crochet hook, Margaret Wertheim founder of the Institute of Figuring leads a project to re-create the creatures of the coral reefs. Margaret and her sister hope to draw attention to distressed coral reefs around the world that are rapidly dying  from changing ocean saline levels, overfishing, and many other threats.