Many of the measures introduced as part of London's action plan target homes and offices by encouraging energy conservation through simple measures such as turning off lights or subsidized roof insulation.

CNN: London leads climate change fight

Ms. TRAIL ZEA: The roof is down to the plywood and it caved in--the roof is caved in on the baby's room, so the baby's crib is all full of roof and insulation.

NPR: Realtors Hash Out Future of New Orleans' Market

After the exterior walls are hung the house slides on rollers to another station where workers add interior walls, insulation and the roof.

FORBES: Magazine Article

Especially in Russia, where a roof means not only tiles and lots of insulation but also the local mafia.

ECONOMIST: A krisha over your head

Standard green features in each home include LED lighting, recycled glass countertops, a high-efficiency water heater, water-conserving fixtures including dual-flush toilets, FSC-certified bamboo flooring, EnergyStar appliances, zero-VOC paints, finishes, and adhesives, a whole-house ventilation system, low-E windows, high levels of insulation, a fully recyclable, heat-deflecting cool roof, exterior wood siding and decking made from FSC-certified cedar, and much more.

FORBES: By Land or by Sea: New Prefab Firm Offers Game-Changing Delivery System