Skip to content extelligence.org in the freethinking tradition of scientific inquiry, technology development and civic responsibility.

• About

  What we do & who we are

• The Mind Gym

  New thinking, new thoughts

• Possible Futures

  Scenarios & planning scenarios

• Perspectives

  Views on the present, ideas about the future

• Sizing the City

  Informing and broadening debate

Perspectives

crocheting a coral reef

In an 18 minute TED talk in 2009, science writer Margaret Wertheim talks on the beautiful math of coral, crotchet and hyperbolic geometry: