Muscles do a number of really important jobs in our bodies. But Professor Hallux thinks he can invent an improved set of muscles. But will they do all the jobs that muscles have to do? And what are those jobs anyway?

Marina Ventura and The Micro-Gridders: The Super Squad
05:17

The Circular Trail: a free Time Hunters history walk around the City of London
46:10

Marina Ventura and The Micro-Gridders: The Power Stash
05:25