Mayor Daley has done a great job of implementing "green" or "vegetated" rooftops to newly constructed buildings. Green roofs are so amazing!!!! Have you ever heard of "green walls" or "vertical gardens"???
Vertical gardens bring lush, verdant life to even the coldest and barest of surfaces, both indoors and out. These 'living walls' increase interior humidity, purify the air and provide a much-needed touch of nature in spare, angular urban spaces like airports, museums and shopping centers.
What are some benefits??
Vertical gardens are not very apparent in Chicago...yet! Like they say at Wrigley, "It's gonna happen"