Whale oil was used in automobile transmissions as late as 1973.
56
A toaster uses almost half as much energy as a full-sized oven.
33
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
More than a billion transistors are manufactured every second.
-25
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
It takes six months to build a Rolls Royce...and 13 hours to build a Toyota.
93