Have you ever looked up and watched a jet high in the sky leaving a long contrail? Have you also wondered what effect that contrail might have on global warming and our environment? Dr. David Travis, from the University of Wisconsin-Whitewater, has, and during Hybridfest in Madison, Wisc., he gave a talk entitled “Climate Change: Indications of Global Warming & Threats from Aviation.”

Tags: David Travis, global warming, Hybridfest
 
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