Unfortunately, a natural cooling may not occur.

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Designers claim that plants not only provide a beautiful alternative to other materials used in construction, they also offer additional benefits, including noise reduction, natural cooling, air conditioning and a psychological boost to those who use the buildings.

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The government may also want to give some momentum to any natural cooling that could come this year, given that authorities forecast the economy to grow 1% to 3% in 2013, potentially faster than 2012's 1.2% expansion but considerably slower than in 2010 and 2011.

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The new Generation III reactors such as the AP1000 have a simplified "passive" cooling system where the water circulates by natural convection with no pumping required.

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The climate may further cool if additional natural long and short-term cycles also enter into cooling phases.

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It uses so-called passive systems for cooling, such as the gravity flow of water and natural circulation based on thermodynamics.

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He believes the current warming trend is the result of natural variability, where a planet goes through phases of warming and cooling and the human contribution to it is minimal.

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For one thing, there's disagreement over how much it should cost for the Capitol Power Plant--which provides heating and cooling power to Congress--to use cleaner-burning natural gas instead of coal power.

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The proliferation of natural gas into the electricity market does nothing to reduce the correlation with heating and cooling requirements.

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