The company 23andMe made headlines by launching its DNA testing service in the UK. But how are the risks of developing a disease calculated?

When you flip a coin we assume it has equal chance of coming up head or tails, so any coin flipping game should be a fair one. But Yutaka Nishiyama and Steve Humble can give you the winning advantage.
  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.