Mick

I liked the documentary that basically put time since the Earth began, was put on a 24 hour clock face and we had only been around for 5 minutes of that '24' hour period.

Possible future Doomsday events (Apparently):-

The Moon is apparently spinning away from us at 3cm per year (this distance speeding up over recent years) meaning we will no longer have a stable Axis, causing the Earth seasons to vanish. Jupiter has such a strong Gravitational force that it pulls Earth's North Pole and the Earth shifts Axis causing massive tidal waves on our Planet.

The Super Volcano, currently residing under North America, actual location:- Yellow Stone National Park, erupts with such massive force that causes Dust to settle in the Earth's atmostphere for months causing Sun light to be blocked causing the Food chain to be spoiled.

Earth's Core solidifies and the Earth loses the Natural Magnetic shield, currently protecting us from Solar wind. The Sun and it's solar wind, strips the Earth of it's Atmosphere and end result, the planet looks like Mars does now.

Milky Way and Andromeda Galaxies collide, it has become apparent that our nearest Neighbour galaxy, Andromeda is on a collision course with our Galaxy, in billions of years time, it may cause untold Gravational effects.

Astroid or Comet, hits Earth causing a ELE (Extinction Level Event).

Our nearest Star (Sol, or The Sun) begins to enter it's final phases of it's life by burning up it's Fuel and it expands to a Super Giant Star, it engulfs Mercury and Venus and quite possibly the Earth.