Global Cities Join Plan To 'Green' Public Buildings

"Major global banking institutions have committed $1 billion to finance the upgrades of municipal buildings in participating cities, which include New York, Chicago, Houston, Toronto, Mexico City, London, Berlin and Tokyo."

"The makeovers will include replacing heating, cooling and lighting systems with energy-efficient networks; making roofs white or reflective to deflect more of the sun's heat; sealing windows and installing new models that let more light in; and installing sensors to control more efficient use of lights and air conditioning."

"Clinton's foundation said the planned changes have the potential to reduce energy use by 20 percent to 50 percent in those buildings."