The most common colour for highlighters is yellow because it doesn't leave a shadow on the page when photocopied. |
Despite the white, fluffy appearance of polar bears' fur (which is transparent), they actually have black skin. |
The bird with the most feathers is the whistling swan, with up to 25,000 feathers. Hummingbirds on the other hand, are so small that they have fewer than 1,000. |
Unlike most birds that sing, a woodpecker will drum its beak against a tree. Other woodpeckers can identify which bird it is by the sound of the drumming. |
Cheetahs are extremely fast, however, they tire quickly and can only keep up their top speed for a few minutes before they are too tired to continue. |
A crocodile cannot stick out his tongue. |
The Coco de Mer palm tree has the earth's largest fruit, weighing 42kg, with the seeds weighing 17kg. |
Valentine, Nebraska has a special "Cupid's Mailbox" that forwards your cards with a special Valentine's stamp. |
The Goblin Shark is considered a living fossil due to the fact that it is the only existing representative of the family Mitsukurinidae, which has a lineage of over 125 million years. |
The goblin shark is considered a living fossil since it is the only. |