ozone layer

09.05.08
EarthTalk

Spraying Safely

How green are aerosol cans now, with chlorofluorocarbons out of the picture?
By the Editors of E - The Environmental Magazine Posted 09.04.2008 at 11:20 am 0 Comments

Dear EarthTalk: What's the deal nowadays with aerosol spray cans? I thought that the ozone-depleting chemicals used in them were eliminated back in the 1970s. Is this true? If so, what is now used as a propellant? Are aerosols still bad for the ozone layer? -- Sheila, Abilene, TX

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The Risks of Geoengineering

One proposed fix for the planet's climate problems could create more problems than it solves
By Gregory Mone Posted 04.28.2008 at 1:13 pm 10 Comments

When it comes to climate change, a quick fix won't do. Science published a paper Friday from the National Center for Atmospheric Research (NCAR) which concludes that a proposed plan to inject the atmosphere with sulfate particles in order to cool the planet would actually have dire consequences.

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