Posted AT 3:46 AM EDT on 02/04/07
When the walls have leaves and the roof is in full flower
VANCOUVER — Alan Darlington's quest for green walls began with a University of Guelph research project into how plants might grow in outer space.Mr. Darlington, however, was more interested in how the research might apply here on Earth -- in stuffy office buildings, for example, where a mix of toxic chemicals and recirculated air can leave people suffering from headaches or gasping for air.
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