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Better Street Lighting Lowers Carbon Emission

A United Nations panel on climate change says global warming is causing extreme weather all over the world and is calling on governments to come up with new ideas to curb gas emissions. Since much of the air pollution comes from coal-fired power plants, scientists in Denmark are trying to lower their nation's energy needs with new types of smart streetlights. Our increasingly industrialized world needs huge amounts of electrical energy, but our power plants still rely mostly on...

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