• 8 Homes with Living Roofs.
• Wind: a source of energy to power the world.
• Why your toxic sofa is full of flame retardants.
• Top-of-the-line windows are a waste of money.
• Net-zero home could reduce utility bills to nothing.
• Prefab design: an interview with Rocio Romero.
• Edison-type LEDs, the light bulb of the future.
• Caution: beware of energy-saving scams.
• Sustainable, million-dollar homes.

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