This episode looks at the incredible energy that exists within the Earth, just a few kilometers below our feet, and the effect that it has had on shaping our world and advancing science and technology. We will follow the astonishing destructive force volcanoes are capable of, and also how they shaped the landscape over billions of years.

Due to 70% of the earth's surface being covered in water, it is bound to play a massive part in the earth's history and future. While it is our most abundant life giver, water also has a tremendously destructive side to it. This episode displays the dynamic effects that water has had on this planet, including gorges, rivers, our oceans, and how they all have helped to shape our societies.

Movements in our atmosphere are complex and influenced by many factors. Air currents carry entire weather systems with them, and as currents are constantly colliding, it becomes extremely difficult to predict them. Meteorologists are now able to follow currents at various heights in the atmosphere, giving insight into just how restless our skies really are.