The first alarm clock could only ring at 4 a.m.
120
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
More than a billion transistors are manufactured every second.
-25
Mico headphones read your brainwaves and select music based on your state of mind.
7
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
Whale oil was used in automobile transmissions as late as 1973.
56
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184