When Krakatoa erupted in 1883, its force was so great it could be heard 4,800 kilometres away in Australia.

An electric eel can produce a shock of up to 650 volts.

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

Wounds infested with maggots heal quickly and without spread of gangrene or other infection.

Light would take 0.13 seconds to travel around the Earth.

The mortality rate if bitten by a Black Mamba snake is over 95%.

Each rubber molecule is made of 65,000 individual atoms.

Quasars are the most distant objects in the Universe.