Giant trees ‘to clear excess CO2′

The scientist who coined the term “global warming” in the 1970s has proposed a radical solution to the problem of climate change.

Wallace Broecker advocated millions of “carbon scrubbers” – giant artificial trees to pull CO2 from the air.

He said some 20 million of the scrubbing devices would be required to capture all the CO2 currently produced in the US.

But he told the festival: “Okay, you say that’s enormous, but we make 55 million cars a year, so if we really wanted to we could. Over 30 or 40 years we could easily make that number.”

BBC