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

Birds’ feathers are fairly waterproof and can trap air against their body to help them

A bio-bubble is a restricted area or environment, also known as an invisible shield, which

Cyclones developing over the north Indian Ocean including the Arabian Sea and Bay of Bengal

Antibodies have been used for over 100 years to fight infectious diseases.