5 incredible facts you probably aren't aware of.

The majority of home dust contains dead skin cells.

Here's a fun piece of science trivia for you: Humans lose 200 million skin cells every hour, according to experts at Imperial College London, and these cells need to go somewhere when we're inside. If the concept of skin dust bothers you, you should know that an American Chemical Society study discovered that a skin oil called squalene naturally lowers indoor ozone levels by up to 15%.

Sudan boasts the most number of pyramids in the whole globe. 

There are more pyramids in Sudan than in Egypt, but the numbers are also far apart. While 138 pyramids have been found in Egypt, there are over 255 in Sudan.

The bumblebee bat is the smallest animal in the world.

 

The bumblebee bat, also known as Kitti's hog-nosed bat, is the smallest mammal in the world, according to the Guinness Book of World Records. It weighs 0.05 to 0.07 ounces, has a head-to-body length of 1.14 to 1.29 inches, and a wingspan of 5.1 to 5.7 inches. Visit one of the few limestone caverns on the Khwae Noi River in the Kanchanaburi Province in southwest Thailand if you want to view this little bat for yourself.

The length of the circulatory system is almost 60,000 miles.

According to the Franklin Institute, if all the veins, arteries, and capillaries in a child's body were stretched out flat, they would span more than 60,000 miles. Our bodies are home to almost 100,000 miles of blood vessels by the time we reach maturity.

The cornea is one of only two body components that lacks blood veins.

The cornea, which is transparent, protects the pupil and other areas of the eye. According to researchers at the Schepens Eye Research Institute of the Harvard Department of Ophthalmology, cartilage and the cornea are the only forms of tissue in the human body without blood veins.