How lasers can help save world's forests

If a country can show that it has reduced its level of deforestation (and the related carbon pollution), then it will receive payments. Great idea, but only if you can accurately draw up a balance sheet of carbon-in, carbon-out. An unlikely solution: lasers being shot from planes at 200,000 photons per second.

Full story at http://www.msnbc.msn.com/id/42935515/ns/technology_and_science-innovation/