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245			_aGlobal Dimming
300			_aSince measurements began in the 1950s, scientists have discovered that there has been a decline of sunlight reaching the Earth; they called it global dimming. But according to a paper published in the journal Science, the dimming did not continue into the 1990s and...
650			_xEnvironment.
856			_uhttp://topdocumentaryfilms.com/global-dimming/
999			_c333401 _d333401