Cloud formation affected by human activity, study says

University of Toronto researchers and their collaborators have discovered that solid ammonium sulphate aerosol – an airborne particle more prevalent in continental areas - can act as a catalyst to the formation of ice clouds, suggesting that cloud formation is another aspect of the global climate system that can be affected by human presence. The findings were published last week in Science.

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<p><a href="http://www.physorg.com/news77294337.html">Cloud formation affected by human activity, study says</a></p> <p>University of Toronto researchers and their collaborators have discovered that solid ammonium sulphate aerosol – an airborne particle more prevalent in continental areas - can act as a catalyst to the formation of ice clouds, suggesting that cloud formation is another aspect of the global climate system that can be affected by human presence. The findings were published last week in <i>Science</i>.</p>