Season 1 - Episode Guide

In this episode, time is compressed to reveal the way geological forces such as volcanic eruptions and huge floods shape our planet.

How does the passage of time affect the existence of life on Earth? Discover how soldier crabs have their own alarm clocks, how plants tell the time, and why humans live far longer than we should. Plus, see hummingbirds and horses evolve before your eyes. Speeding through millennia, computer-generated images reveal how plants and animals manipulate time as they strive to find food, meet a mate and fulfil their ultimate purpose - creating the next generation.

The idea of controlling time - being a "time lord" - is an attractive one, as our lives become ever busier. But is it really possible that one day, perhaps by travelling at the speed of light, we may be able to walk with dinosaurs or visit our yet-to-be-born descendants? Narrated by Jeremy Vine , this final part also looks at the possibility of buying more time and living longer, and asks whether the humble worm holds the secret to eternal life.