The Ebola virus kills 4 out of every 5 humans it infects.

Our oldest radio broadcasts of the 1930s have already travelled past 100,000 stars.

Christian Barnard performed the first heart transplant in 1967 - the patient lived for 18 days.

Human tapeworms can grow up to 22.9m.

The molecular structure of DNA was first determined by Watson and Crick in 1953.

An individual blood cell takes about 60 seconds to make a complete circuit of the body.

Wireless' communications took a giant leap forward in 1962 with the launch of Telstar, the first satellite capable of relaying telephone and satellite TV signals.

The Earth spins at 1,000 mph but it travels through space at an incredible 67,000 mph.