Size Matters

In this episode, Planet Earth grows to outlandish proportions causing lying down to become the new standing up, the sun gets big ideas giving us a 20,000 year winter before blowing up in the biggest explosion since the big bang, and we meet a dog the size of a dinosaur. It all goes to show that size really does matter.

In this episode, Planet Earth shrinks to half its size, causing altitude sickness and a cosmic disaster. The sun gets as small as a sun can be, turning Earth into a frozen ice ball. We also see what happens to a man who shrinks to the size of a wasp. Along the way, we find out why small creatures seem to have superpowers, and learn why a smaller planet would mean Earth turning into Mars.