Share 'Global warming felt by space junk, satellites'
Manmade increases in carbon dioxide might be having effects that are larger than expected
An artist's illustration of the Canadian Space Agency's SCISAT-1 satellite in orbit, which is carrying the Atmospheric Chemistry Experiment to track carbon dioxide levels in Earth's atmosphere.
By Charles Q. Choi
updated 11/11/2012 5:29:33 PM ET
Rising carbon dioxide levels at the edge of space are appar…
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