The electric chair was invented by a dentist!
122
Kleenex tissues were originally used as filters in gas masks.
46
A small airplane can fly backwards.
75
Students at MIT developed a wristband that can regulate your “thermal comfort”, which could possibly eliminate the need for central heating and cooling.
17
Energy is being wasted if a toaster is left plugged in after use.
21
Sony researchers have developed a refrigerator that only opens when you smile.
9


