More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
Whale oil was used in automobile transmissions as late as 1973.
56
Energy is being wasted if a toaster is left plugged in after use.
21
In the early 1960's, Porsche commercially manufactured farm tractors.
24
Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
17