Leo Loved Animals

55

Leonardo da Vinci loved animals. He would often buy animals in cages just so he could set them free.

A Candle’s Flame

80

The human eye is so sensitive that if the earth were flat and it was a dark night, a candle’s flame could be seen from 30 miles away.

The Strongest Material Known To Man

296

Graphene is the strongest material known to man. It’s 200 times stronger than steel. It would take an elephant to break a sheet as thin as a piece of paper.

1,700 Words

84

William Shakespeare is credited with the invention or introduction of over 1,700 words that are still used in English today.

Salt Was Worth Its Weight In Gold

81

During Roman times, salt was worth its weight in gold and often used as currency. Soldiers were sometimes paid in salt, hence the word “salary”.