The Ongoing Collapse of the World's Aquifers

When humans over-exploit underground water supplies, the ground collapses like a huge empty water bottles. It's called subsidence, and it could affect 1.6 billion people by 2040.

The Ongoing Collapse of the World's Aquifers
When humans over-exploit underground water supplies, the ground collapses like a huge empty water bottles. It's called subsidence, and it could affect 1.6 billion people by 2040.