Lawn on your roof

Never thought about it. Neither had I.
But for those that live in top floor apartments in inner-city dwellings you may now have an answer to greening that plot of concrete. It seems that Toyota, famous for making cars, now has an arm called Toyota Roof Gardens who have manufactured a product able to withstand the rigours of growing in a polluted rooftop environment.
What will they think of next?
Source: Treehugger: Greenign your roof just got easier



