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Start by purchasing What Can I Do? Lisa Harrow's A-Z guide to caring for the planet, now available in separate editions for the US, The UK, Australia, and NZ.

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Green Roofs

Greenroofs.com: The Resource Portal for Green Roofs

Growing a garden on your roof has always been a great idea for those of us who have access to a flat roof, and not much garden at ground level. However, a roof garden has a lot more to offer than just a pleasant place to sit out on a hot night. Roofs covered in grass, plants and small trees are springing up in cities all over the world. They keep your home cool by absorbing the ultraviolet radiation, they provide extra sound and temperature insulation, they make the air you breathe cleaner, they soak up rainwater that would otherwise add to storm water runoff, and they provide essential habitat for wildlife. Huge flat roofs can be enjoyed as parks, and public recreation areas.