cool shades

A proposal to reverse climate change by placing mirrors in the sky to reflect sunlight away from Earth won’t give us back the same climate we had before we started emitting so much carbon dioxide, says a new study.

Researchers at the University of Bristol in the United Kingdom applied state-of-the-art global climate models to predict the effect of using reflective sunshades to send a fraction of the sunlight that enters Earth’s atmosphere back into space before it can heat things up.

Although we managed to cancel out warming on a global average, what you end up with is some areas that warm up and some that cool down, said Dan Lunt, who led the study, published in Geophysical Research Letters. Heat Is Online – originally Discovery.com, July 8, 2008