The third TED talk in less than 24 hours to be posted here.  As you can see I really enjoy those talks and have been deprived of them from some time; I have recently embarked on a new stage of my life (certainly feels that way at least) and so I have been checking out some of my passions.

This following talk stays on the theme of the previous one, ethnomathematics.  No corals in this one but, instead, African villages.  A very interesting talk.

Enjoy: