General science: stuff you forgot from school

Take a look at all the sciences: biology, for example the human body, cell biology and genetics; chemistry, including the periodic table, fuels and pollution, metals and alloys; and physics, such as the laws of energy and electricity, forces and the universe, waves, radiation and space. "I Used To Know That: General Science" is an easy and accessible trip down memory lane, helping you remember all those useful things from school which you have now forgotten.