The sweet aroma of maple syrup was mixed with a very different smell: the pungent odor of hot, used restaurant grease. A Vermont farmer converted his sugar house from regular fuel oil to used vegetable oil to do his part to prevent global warming. Maple sugaring in New England is one of the forecast losses connected to climate change. Some projections show a very large loss of sugar maples by 2100 as the forests move north (to colder climates) in Canada, and with that, the end of maple sugaring in Vermont as we know it.