Why not green up your roof with a new tile system that makes it easy? Toyota Roof Gardens has created a new green roof tile, measuring 20 inches square, which lets you easily add grass to your roof. The best part is that the tiles are self watering, so there's little maintenance. Bonus: at 2 inches thick, your roof won't collapse.
Implications - The advantages of this product are many, not the least because green roofs help provide natural cooling and insulation for buildings of all shapes and sizes. Furthermore, they also supply oxygen and remove carbon dioxide -- something that is more and more important as our world continues to struggle to combat climate change.