This year, Toronto rooftop gardens are more popular than ever, wrote the food columnist for The Toronto Sun July 5. As noted recently by VanityFair.com (May 2006), green roofs are listed as one of the safeguards for a sustainable environment. Among other projects in the city:York University. In 2001, the University installed a 1,875 sq.-metre green roof during the construction of its Computer Science & EngineeringBuilding.