Build a giant wall. 6,000 kilometers long. Made out of sand. Stuck together with bacteria. No, seriously.
“The threat is desertification. My response is a sandstone wall made from solidified sand,” said Mr Larsson, who describes himself as a dune architect.
The sand would be stabilised by flooding it with bacteria that can set it like concrete in a matter of hours.
Take his word for it; he’s a dune architect. And desertification is not something to mess around with. It’s poised to affect over 2 billion people in 140 countries if left unchecked. But with a gigantic, bacteria-reinforced dune wall, buttressing a “Great Green Belt” of trees, unchecked it will not be. As long as we can figure out minor details like politics, funding, and where to obtain “giant bacteria-filled balloons.”