The Earth is alive because of liquid water and the success of our human story is intimately connected to our relationship with this simple molecule. But the growth of our civilisations has created ...

This particle diagram represents water or, to use its chemical formula, H₂O which is a compound of the elements hydrogen and oxygen. In one molecule of water, there are two hydrogen atoms and ...

This is a model of a water molecule. The red represents one atom of the element oxygen, and the white represents two atoms of the element hydrogen. This is why you might hear someone call water “H2O”!