Green roofs cool the 'urban heat island effect,' save energy and are prettier to look at. Here's why you might see more lawns in the sky Downtown.
Most people get an eyeful of concrete and asphalt when they look out their windows onto Downtown's cityscape.
Some local leaders are looking to change that by outfitting new and old buildings
with green roofs -- grass and plant surfaces that filter storm-water runoff and improve energy efficiency.