
UVA Professor Kelsey Johnson is crusading against light pollution — hoping to preserve dark skies for star gazing. (Credit: Sandy Hausman)
Climate change has fed awareness of air pollution – the problems caused by greenhouse gases. But there’s another source of pollution that’s taking a toll on humans and wildlife.
As Sandy Hausman reports, a professor at the University of Virginia is calling on local, state and national leaders to act against light pollution.

