Saving a Little More Energy With Exit Signs

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Those ubiquitous exit signs use a huge amount of electricity; a little-known alternative to conventional LED products offers surprising savings.

An exit sign at Yale's LEED-Platinum Kroon Hall. Click to enlarge.Photo Credit: Alex Wilson

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Insulation to Keep Us Warm—Not Warm the Planet

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An update on getting the global warming potential (GWP) out of insulation materials.

Today's closed-cell SPF has a global warming potential of 1,430, but if producers adopt new HFO blowing agents, it will drop to close to zero. Click to enlarge.

Photo Credit: John Straube

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"Wood Wars" Continue, with Military Losing

Defense authorization bill calls to haul military money going to LEED
by P.J. Melton

 

The U.S. Congress is calling a halt to certain military spending on green building in a newly passed defense authorization bill (H.R. 1540). The bill prohibits use of Department of Defense funds to achieve LEED Gold or Platinum, with waivers possible if a cost-benefit analysis for the project can demonstrate payback. Exceptions may also be made without a special waiver if achieving Gold or Platinum “imposes no additional cost.”

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The End of Peak Oil?

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With new oil discoveries and more effective extraction methods, the world is probably many decades away from peak oil.

A "Hubbert Curve" of world oil production, showing the peak in this decade, which was widely predicted just a few years ago. Click to enlarge.Photo Credit: Energy Watch Group, UK.

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