Nitrogen Oxides
Better known as laughing gas, nitrous oxide is used as an anaesthetic and to enhance vehicle engine performance.

MRI
Soft body tissues such as ligaments and nerves are not accessible to study using x-rays. Magnetic resonance imagers allow physicians to study tissues that are invisible to x-rays.

Polymers
What is a polymer and how are they made. A simple comparison with bricklaying helps answer the question.

Penicillin
Discovered by accident, Penicillin was a mere curiosity for several years until methods were found to use it effectively.

The Artificial Satellite
Since Sputnik's first orbit in 1957, artificial satellites have become indispensable tools of science and technology.

Insulin
Flies don't normally pay much attention to urine. When they did, it led to a discovery that has saved the lives of millions of diabetics.

Kevlar
Lightweight and stronger than steel, Kevlar has been used in bullet proof vests, the Mars Pathfinder and Skis.

Velcro
This cunning hook and loop instant fastener works in the same way that some plant seeds stick to clothes.

Game Theory
Game theory is used to predict outcomes of human endeavours such as economics and even wars.

DNA, Aborigines and the Dingo
Did aboriginal Australians bring the dingo to Australia? DNA studies tell us who came first.