Uphill Effort for Eco-Friendly Housing

Buildings in North America produce vast amounts of greenhouse gases, sewage and other waste. In Mexico, ecological construction is just getting started, with 5,000 housing units near completion.

Organic Gardens vs. Chem-Fed Lawns

Grass lawns in the United States cover nearly three times more area than any irrigated crop, and consume billions of liters of water per week, say environmentalists.