Over billions of years, our sun is transforming into a red giant. We'll show you what will happen as the polar caps melt and raise the oceans 200-plus feet, mega-storms hundreds of miles wide lash Earth and all evidence of our civilization finally melts away as temperatures exceed 2,500 degrees. Using dramatic CGI animations, this episode brings a glimpse of this frightening future to life.

The Earth revolves at 1,000 miles an hour. But what if it significantly slowed and eventually stopped? Sea levels at the equator drop and locations surrounded by water would dry out. With a loss of atmosphere, the Earth could no longer support human life. And each side of the Earth will be stuck in day or night for six months at a time. The dark side is lethally cold and the light side is bathed in deadly solar radiation. See how humans and creatures might cope in this changing world.

Imagine our population doubling overnight to 14 billion people, demanding more from an already struggling planet. Billions of people are homeless even as mega-skyscrapers are built. Food supplies and natural resources dwindle, and clean water rationing is a part of everyday life. Deadly smog shrouds cities. Countries are transformed as people are forced to migrate to survive.This episode shows you the devastating impacts of a suddenly overcrowded world.

What would our world look like if we ran out of oil? The lifeblood of our high-tech, highly mobile world won't last forever. Watch one scenario of what happens when one day oil does run out. How might our world change and how would we adapt? Aftermath follows the chaotic days and months after this catastrophic event through dramatic re-creations and CGI animation. Find out how we might cope as food disappears, electrical power fails and winter turns the big cities into isolated pockets of concrete and glass. What will be more important to our survival — the technology to develop new sources of energy, or a change to a more sustainable way of life?