http://www.switched.com/2008/10/09/scientists-putting-gas-masks-on-sheep-to-determine-eco-footprint/ Switched Comments for Scientists Putting Gas Masks on Sheep to Determine Eco-Footprint http://www.switched.com/media/feedlogo.gif http://www.switched.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.switched.com/2008/10/09/scientists-putting-gas-masks-on-sheep-to-determine-eco-footprint/http://www.switched.com/2008/10/09/scientists-putting-gas-masks-on-sheep-to-determine-eco-footprint/Oct 14th 2008 11:18PM