By Ari Phillips on December 18, 2013
Los Angeles is the first major city to require all new and refurbished homes to have cool roofs, which reflect light.
By Joanna M. Foster on November 6, 2013
For the third year, Massachusetts has taken the crown for most energy efficient state in an annual scorecard released Wednesday.
By Jeff Spross on October 23, 2013
The Natural Resources Defense Council studied an upgrade of three buildings in downtown D.C., and found big energy and cost savings.
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