Mexico City plants lawns on roofs to fight warming
Thu Jun 5, 2008 10:24pm EDT
By Mica Rosenberg
MEXICO CITY (Reuters) – Mexico City, one of the world’s most polluted capitals, is planting rooftop gardens on public buildings as part of a program launched on Thursday to combat global warming.
The smog-choked metropolis plans to replace gas tanks, clothes lines and asphalt on 100,000 square feet (9,300 square meters) of publicly owned roof space each year with grass and bushes that will absorb carbon dioxide.