A human head remains conscious for around 20 seconds after being decapitated.
A body decomposes four times faster in water than on land.
Within three days of death, the enzymes from your digestive system begin to digest your body.
When a person dies, their sense of hearing is the last to go.
You can't die of 'old age', only from diseases brought on by age.
In some cases, bodies develop a corpse wax that can preserve the remains for years.
Forensic scientists can tell how long it has been since death by looking at the species of insect on the body.
The skin around the finger and toenails dries and contracts after death, making it look as though they have grown.
Dead bodies swell up like balloons after about four days due to the release of gases and liquids.