Human civilisation is under attack from a catastrophic - but unseen - threat from space. As a supermassive black hole approaches our planet, its enormous gravitational forces trigger earthquakes, volcanic eruptions and tsunamis of unprecedented size.

What might happen if a ringed planet the size of Neptune were on a collision course with Earth? Total destruction in just four hours.

Humanity's first volcanic hyper eruption blows through the Earth's surface. Shockwaves and molten rock destroy buildings and cities. Then as volcanic gas blocks out sunlight, food chains collapse, and epic famine threatens the very future of mankind.

An asteroid impact 65 million years ago caused the downfall of the dinosaurs. What would happen if a simliar space rock struck near the same spot again? How would modern humans cope with the ensuing cascade of natural catastrophes?

World War 3 breaks out and a nuclear nightmare becomes reality as thousands of hydrogen bombs destroy the world's greatest cities. In the ensuing nuclear winter, crops fail worldwide and mass starvation drives humanity to the brink of extinction.

When a gamma ray burst from two colliding stars hits the atmosphere, the radiation wipes out half the planet. The Americas face a slower death as ultraviolet radiation and starvation threaten to send the human race into total extinction.

When Earth gets hit by a deadly solar storm - a massive chunk of the Sun - our planet's electrical system turns into a smoking ruin. How does modern civilisation cope without power?

What if, for the first time in 4.5 billion years, Earth was pulled out of its orbit, sending it on a collision course into the Sun? Earth's 65-day deadly fall brings massive hurricanes, sandstorms and a heat wave that kills every last person.

When rogue aliens launch a surprise attack on Earth, people are left dying in the streets, world governments are obliterated, cities are destroyed and a deadly virus is unleashed. Can mankind survive, or is this the end?

Ocean currents control the climate around the world. When they suddenly stop, it unleashes an endless cascade of weather disasters. No place on Earth is spared from this climate catastrophe, which threatens to end human civilisation.