Nothing like checking out the latest concepts of ecologically minded designers and architects to regain faith in the potential that tomorrow’s urban world can bring. For instance, how about this algae canopy, featured at the Milan Expo, that produces a forest’s worth of oxygen daily? You will need to read on to discover its many other virtues. Not only is the concept beautiful and promising, but it elegantly marries nature, technology, energy, design and efficiency. Dreaming is the first step towards achieving the impossible.