There are 92 known cases of nuclear bombs lost at sea.
148
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The native Americans planted three sisters (corn, beans, and squash) together so that they would benefit each other. The corn provides a structure for the beans to climb. The beans provide the nitrogen to the soil, and the squash spreads along the ground preventing weeds.
30
Leonardo da Vinci could write with one hand and draw with the other at the same time.
56
Two dogs were among the Titanic survivors.
262
The Mint once considered producing doughnut-shaped coins!
60
Contrary to popular belief, the first ironclad warships were built by Korea in the 16th century.
14
The first coast-to-coast telephone line was established in 1914.
33