More than just a chemical used in swimming pools. Read more
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Chlorine (Cl)
More than just a chemical used in swimming pools.
Sodium (Na)
The alkali metal that plays a role in soap, paper, human health and murder.
Tungsten (W)
Hot, hard and heavy - it cuts steel and penetrates armour, yet China has a near monopoly
Sulphur (S)
Does the world face a looming glut of this devilish yellow element?
Silicon
Is the element behind the computing revolution about to transform the world once again?
Caesium (Cs)
The caesium-based atomic clock has redefined the very meaning of time.
Lead (Pb)
The sweetest of poisons, have we learnt how to handle this heavy metal?
Uranium (U)
Nuclear power is carbon-free but leaves radioactive waste - a real dilemma for Greens
Calcium (Ca)
The great structural element - both in the natural world and in modern engineering
Bromine (Br)
Bromine-based flame retardants are all over your home, but are they a health risk?
Nitrogen
The bringer of life and death on a massive scale, as well as an environmental headache.
Nickel
The economy of Nickel, the metal and element that made the jet age possible
Chromium
The metal of modernity - think Harleys and skyscrapers - chromium also has a dark side.
Fluorine
The key building block for CFCs and a string of other gases posing a threat to mankind
Technetium
Essential for medical imaging, supplies of this manmade element are far from guaranteed.
Oxygen
The 'element of life' also makes our atmosphere very dangerous and costly to operate in
Iron
How the abundant metal lron became the very stuff of modern industrial life
Cobalt
The metal in magnets and phone batteries - but is some of it being mined by children?
Boron
The mineral from the Wild West that toughens glass and stops bullets in their tracks.
Gallium and Indium
LED lighting and the other electronics revolutionised by the elements Gallium and Indium
Titanium
It's stronger than steel, but could this glamorous metal become as common as steel?
Magnesium and Beryllium
Two metals with sinister reputations - one for flammability, the other for lung disease
Copper
Why copper wires? And do solar power and batteries herald the death of the old AC grid?