One of the greatest things in life is the ability to learn and gain knowledge. As we grow up we realize that we never really stop learning outside of school. While some people know that facts can be weird and seem a bit frivolous, you never know when it might come in handy. Here are some facts that surely make your mind itch for more information.

The human brain is 78% water.

Up to 60% of an adult's body is made up of water. Research has shown that the brain and heart are 73-78% water.

10% of the world's population is left handed.

Did you know that our first facts are about left handed people. It is said that men are more likely to work with their left hand than women. Various studies have also indicated that a person's temperament can be determined by the time he spends in the mother's womb. Some studies also suggest that a person's heredity may also play a role in determining whether a person will be left- or right-handed.

You share your birthday with 19 million people.

On average, a person will share their birthday with 19 million other people out of a population of over 7 billion. If you were born on the least common day of the year, you would have the same birthday as 18 million people.

The average bearing will have 42 teeth.

Each adult bear will have a total of 42 teeth. It includes 4 visible and incisor teeth, 12 incisors, 16 premolars and 10 molars. The claws on the bear's feet are relatively small compared to their teeth.

Rabbits eat their feces.

After eating them, they will digest it again like normal food. Rabbits have two types of droppings, small round black ones and soft black ones called cecotropes. They ingest the cecotrope droppings and do so so that they can reabsorb any undigested nutrients from their food. This process is usually done once a day.

Birds need gravity to swallow.

Birds cannot chew their food and instead swallow their prey whole. A bird's esophagus is wide enough to swallow large meals. They rely on gravity to push their food down the esophagus and then later into their stomach.

The blood of lobster is colourless.

However, when their blood comes in contact with oxygen, it turns blue. This is mainly due to the copper present in the blue hemocyanin molecule in their blood. Now here are some cool scientific facts, do you know the facts.

Spiders are not insects.

All insects are classified as six-legged creatures that have a head and a chest and wings. Spiders are arachnids and have only two body parts: the cephalothorax and its eight legs and the abdomen.