Rising costs for oil and natural gas lead factories to find alternatives to petroleum products as both ingredients and energy sources, according to this May 27 article in the The New York Times. "The adhesive on 3M's Sctoch tape and on many of its bandages no longer has petroleum as an ingredient. Goodyear is experimenting with solar factory walls to cut back on heat generated by oil and natural gas furnaces...'Energy is still a big, controllable cost,' says Neal Elliott, who runs the industrial program for the American Council for an Energy Efficient Economy. 'We have wrung out most of the savings from labor, but energy is something that can still be cut back.'"