Wall of sand

Here’s a fascinating piece of fantastic geo-engineering: walling in the entire Sahara desert by using bacteria to solidify the sand.

A green future for deserts?

A green future for deserts?

The idea is preposterous of course, for a number of reasons: countering bacterial spread, the logistics of it, eco-systems balance problems, the time-span involved (thousands of years!) and a host of other potential problems. But the presentation is gorgeous, well-researched and of course meant as a thought experiment rather than a serious proposal.

I like dreamers like this.

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