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TEDx Johanessburg (session 1) – Hennie Eksteen

Here are some interesting facts about earthworms:

  • They have no immune system…or teeth
  • The more rotten their food is, the better
  • They are the most numerous animals on earth
  • They lay cocoons every day or so
  • Earthworms create, purify and sanitise soil

OK, this is interesting but nothing I can’t get from Wikipedia.

I’m in two minds about this presentation.  I enjoyed it thoroughly but to me it didn’t seem to fit in with the theme of the conference…community upliftment.  Yes, earthworms are a great source of organic fertiliser that increase crop yields and are good for the environment.

But I was under the impression that presenters at TEDx must have done something to improve their small corner of the world.  Professor Eksteen has studied earthworms and clearly knows a lot about them.  He’s presented some interesting facts about how earthworms can be good for agriculture, but hasn’t done anything besides be an academic who studies earthworms.  Or maybe I missed something…?

As I said, this was interesting, but was it an idea worth spreading?

By Michael Rowe

I'm a lecturer in the Department of Physiotherapy at the University of the Western Cape in Cape Town, South Africa. I'm interested in technology, education and healthcare and look for places where these things meet.