Take it further
Got a passion for science? Find out about studying science at The Open University.
Unzip your genes
Try our quiz to determine whether common traits are hereditary or influenced by the environment.
Challenge your ears
Have you tried: The Shepard Tone illusion?
Bang on TV
Bang Goes The Theory returns on BBC One (England) and BBC Two (Scotland and Wales) on August 15th at 7.30pm. Full schedule and iPlayer links are on bbc.co.uk.
In the first of the new series, Jem makes his own diamond and then proves they aren't forever. Dr Yan explains the science of popcorn, and Dallas investigates why we haven't cured cancer yet, meeting the team that hope to change that.
The chemistry that makes diamonds
The 'bang' of popcorn—forces explained
Coping with cancer