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Block that heat
Block that heat
The layer of glass on the headquarter's exterior reflects the sun's heat while allowing for natural light. The structure's north-south orientation protects inhabitants from the glare of the sun.

NEXT: Solar canopy
Last updated December 03 2008: 10:34 AM ET
Eco-friendly city of the future The Emirate of Abu Dhabi begins construction on its green city, Masdar. See the plans for this $15 billion undertaking. More video