Whale oil was used in automobile transmissions as late as 1973.
56
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
More than a billion transistors are manufactured every second.
-25
Castor oil is used as a lubricant in jet planes.
-5
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
Mico headphones read your brainwaves and select music based on your state of mind.
7
The life boat was patented in 1845!
29