27 Jul 2012:
Powerful Storms Linked to
Depletion of Ozone Layer, Study Says
A new study warns that a surge in powerful storms, perhaps linked to a warming climate, could be causing a depletion of the planet’s protective ozone layer
. Writing in the journal Science
, Harvard researchers
explain that water vapor inserted into the normally dry stratosphere by strong thunderstorms is triggering chemical reactions with now-banned chlorofluorocarbons, CFCs, essentially creating ozone-destroying conditions identical to those occurring over the Antarctic, high southern latitudes, and parts of the Arctic. That, in turn, could lead to an increase in UV radiation reaching the earth’s surface, posing a higher risk of skin cancer for humans as well as potentially harmful conditions for some plants and crops. Lead author James G. Anderson said more research is necessary, including direct measurements of the effects of water vapor on ozone chemistry. But he said that given recent research linking climate change to an increase in extreme weather events, these findings could portend increased ozone loss in years to come. “It’s the union between ozone loss and climate change that is really at the heart of this,” Anderson told the New York Times
. “Now, they’re intimately connected.”
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A look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
Watch the video.
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.