A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
The first alarm clock could only ring at 4 a.m.
120
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
A small airplane can fly backwards.
75
The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
Energy is being wasted if a toaster is left plugged in after use.
21
Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
17