There are only four words in the English language which end in"-dous": tremendous, horrendous, stupendous, and hazardous.

A healthy person has 6,000 million, million, million haemoglobin molecules.

The reason why tattoos do not vanish even though we shed our skin is because the dye is injected deeper into the dermis part of the skin. It is only the epidermis that we shed.

AMAZING FACTS