Like Sept.11, volcano plane ban may hold climate clue (Reuters)

[Mgtrben news]

Reuters - Plane-free skies over Europe during Iceland's volcanic eruption may yield rare clues about how flights stoke climate change, adding to evidence from a closure of U.S. airspace after September 11, 2001, experts say.

Source (http://us.rd.*****.com/dailynews/rss/topstories/*http://news.*****.com/s/nm/20100423/ts_nm/us_climate_aviation)