with Johnny Ball
A light-hearted exploration of numbers and science.
This week Johnny discovers why hands are so handy, how to make sense of your senses, automate an automaton and how bionic a bionic man can be. Meanwhile-Think of a Number - how many times can you take three from 24?
Written by JOHNNY BALL
Production ALBERT BARBER Series producer ANN REAY BBC Bristol
(Answer: Once - after you take three from 24 it becomes 21)