Magnesium is loved by plants, folk suffering constipation and boy-racers, as Allan Blackman reveals in ep 47 of Elemental.

Magnesium is a crowd favourite, loved by everything from plants to people suffering from constipation, as well as boy-racers.

Magnesium (symbol Mg, atomic number 12), is an essential element for most living things. In plants, a Mg²⁺ ion is at the heart of the chlorophyll molecule, putting the element at the base of the food chain.

In the human body, it is involved in the synthesis of ATP, DNA and RNA.

Magnesium ribbon burns with a brilliant white light and continues burning even after the oxygen in the air is used up. It can burn in an atmosphere of carbon dioxide and even in water.

It is often alloyed with aluminium to make a strong, light alloy that is used in mag wheels as well as bikes, cars and aircraft. These alloys are able to be cast, resulting in items that are very strong, says Professor Allan Blackman from AUT.

Go to this episode on rnz.co.nz for more details