Human hair colour can vary from blonde to red, brown and black.

If the Earth stopped rotating, we would face catastrophic consequences.

A pulse oximeter is used to measure the heart rate (pulse) and oxygen saturation levels.

Older theories say that a single dog year is equivalent to seven human years.

Asked by Aayan Kumar PG, Class 1, Hyderabad

When human beings breathe, they take in oxygen (O2) from the air that travels through

The Olympics logo consists of five different coloured interlaced rings of equal dimension.

A mouthguard, also known as a mouth protector, mouthpiece or gum shield, is a device

Ocean waves are basically disturbances on the surface of ocean water.

Seas across the world are polluted beyond imagination and when strong waves come onto the