The cigarette lighter was invented before the match.
210
A toaster uses almost half as much energy as a full-sized oven.
33
It takes six months to build a Rolls Royce...and 13 hours to build a Toyota.
93
More than a billion transistors are manufactured every second.
-25
Kleenex tissues were originally used as filters in gas masks.
46
Whale oil was used in automobile transmissions as late as 1973.
56
Mico headphones read your brainwaves and select music based on your state of mind.
7