Modern Wood-Clad House Uses Limestone Walls for Passive Cooling in the Italian Alps

October 13, 2014 by  
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Read the rest of Modern Wood-Clad House Uses Limestone Walls for Passive Cooling in the Italian Alps Permalink | Add to del.icio.us | digg Post tags: alpine home , alps , boxy windows , Casa Prè de Sura , casati , dolomites , gable-roof , italy , limestone , limestone aggregate , limestone alps , living roof , san martino

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Modern Wood-Clad House Uses Limestone Walls for Passive Cooling in the Italian Alps

Air Pollution Levels in China Reach 20 Times the Safe Limit for Human Health

October 13, 2014 by  
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China is known for having some of the world’s worst air pollution , but air quality in the country recently hit a new high at 20 times greater than the safety limit for human health. The Guardian reports heavy smog is enveloping parts of northern China and causing visibility levels to drop as measurements of small (PM 2.5) pollutant particles are rising. The particles are dangerous because they can embed themselves deep in the lungs, and they’ve reached more than 500 micrograms per cubic meter in parts of Hebei, near Bejing. The World Health Organization’s level for maximum health exposure to PM2.5 particles is 25 micrograms per cubic meter, and current levels are 20 times higher. The situation has led authorities to issue an “orange alert.” Read the rest of Air Pollution Levels in China Reach 20 Times the Safe Limit for Human Health Permalink | Add to del.icio.us | digg Post tags: air pollution , bejing , china , coal , fossil fuels , global warming , Health , hebei , particulate , pm2.5 , pollutant , quality , smog , toxic , WHO , World Health Organization

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Air Pollution Levels in China Reach 20 Times the Safe Limit for Human Health

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