Municipal waste — from poop to heat — can be a valuable resource that could run our cities more cheaply and sustainably, says a hands-on Canadian ecologist.
The cheapest solar technology is just situating your home or office in the right direction when it's built. You don't have to be Socrates to understand the concept — but it might help.
Since the 1970s, the cry has been to 'Save Our Cities' — often from the seductive call of the suburbs. But now our oldest suburbs themselves are under siege from the same problems.
Urban sprawl continues to increase. More and more land is being developed on the edges of wilderness or agricultural areas, affecting quality-of-life issues.