Ch+3

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Click here to download a pdf version of the slide show, with three slides per page and lines for notes.

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=[|Railroads sued over diesel soot at California rail yards]= This has a local connection, here's a quote "A health risk assessment conducted by state air quality authorities found the west side of San Bernardino to have the highest cancer risk from rail yard pollution of any community it studied in the state."

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=Link to more Air Pollution information=

A Wordle of reaction to air pollution. Make your own Wordle at: [|Wordle]

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[|2011 the Year of Two Ozone Holes] media type="custom" key="27790551" media type="youtube" key="qUfVMogIdr8?fs=1" height="385" width="480"

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Plan B: Mobilizing to Save Civilization media type="custom" key="13163926"

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These pretty mother-of-pearl clouds are composed of ice crystals and form when temperatures drop below minus 83 degrees Celsius. Known as polar stratospheric clouds, or nacreous clouds, they play a central role in the formation of ozone holes as they provide surfaces upon which chemical reactions that destroy ozone molecules occur.

Read more: @http://bit.ly/17V1lun via Australian Antarctic Division

Images: Peter Hargreaves, The McMurdo Post and Ivor Harris  — with  [|Sarala Acharya] ,  [|Dinesh Reddy]  ,  [|Georg C. Lim]  ,  [|Nining de Guzman]   and  [|Pravin Psyco Chaudhary]  . media type="custom" key="27752081" =2014 Carbon Dioxide Graph:= =[|2014 Carbon Dioxide]= media type="custom" key="27790545"

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