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Tue May 26, 3:45 pm ET
LONDON(AFP) (AFP) US Energy Secretary Steven Chu said Tuesday the Obama
administration wanted to paint roofs an energy-reflecting white, as he took
part in a climate change symposium in London.
The Nobel laureate in physics called for a "new revolution" in energy
generation to cut greenhouse gas emissions.
But he warned there was no silver bullet for tackling climate change, and said
a range of measures should be introduced, including painting flat roofs white.
Making roads and roofs a paler colour could have the equivalent effect of
taking every car in the world off the road for 11 years, Chu said.
It was a geo-engineering scheme that was "completely benign" and would keep
buildings cooler and reduce energy use from air conditioning, as well as
reflecting sunlight back away from the Earth.
For people who found white hard on the eye, scientists had also developed "cool
colours" which looked to the human eye like normal ones, but reflect heat like
pale colours even if they are darker shades.
And painting cars in cool or light colours could deliver considerable savings
on energy use for air conditioning units, he said.
Speaking at the start of a symposium on climate change hosted by the Prince of
Wales and attended by more than 20 Nobel laureates, Chu said fresh thinking was
required to cut the amount of carbon created by power generation.
He said: "The industrial revolution was a revolution in the use of energy. It
offloaded from human and animal power into using fossil fuels.
"We have to go to a different new revolution that can severely decrease the
amount of carbon emissions in the generation of energy."