by Matthew Cobb
You've probably seen this as it has been everywhere already – Tumblr, Twitter, t'Internet – and it is going to make you nauseous after a while, but it's still pretty cool. It shows an amphipod (the thing with legs), which has on it a diatom (the round thing) which in turn has on it a bacterium. It gives you some idea of the scale of life, all the more so when you remember that when life started, around 4 billion years ago, the first self-replicating molecules were far, far smaller than that bacterium!
