Part-2 End of the World: 10 Disasters that could end it all at any given second.

6. Divine Intervention

As with all end of the world theories it's impossible to know if divine intervention is a feasible end of the world scenario. Despite its lack of scientific evidence it gains validity through strong support. Christians look to the Book of Revelation, Jews to the Book of Daniel, and Muslims believe that the coming of Mahdi will bring the end. All religions have a similar story: a divine force will intervene in the world to bring our history to an end and start a new moral order. Even non-believers have something to worry about since some doomsday groups decide to take these matters into their own hands. For example, the Aum Shinri Kyo sect that released Sarin nerve gas into a Tokyo subway station in 1995, killing 12 and injuring more than 5,000. Imagine what would happen if these groups got their hands on more powerful weapons.

7. Solar Activity (Super-Flares and Decreased Activity)

The sun emits solar flares, also known as coronal mass ejections, towards earth frequently. These flares are large magnetic outbursts which contain high-speed subatomic particles. Luckily, earth's atmosphere and magnetic field protect us from the consequences of these potentially lethal flares. However, evidence has been found that sun-like stars far from our solar system can briefly increase in brightness by 20 times. It is hypothesized that these increases are caused by super-flares, which are millions of times more powerful than the common solar flare. If our sun were to emit one of these super-flares it would literally fry the earth. On the other hand, if our sun's activity were to decrease by a mere 1% (which has been known to happen to many sun-like stars) we would be flung back into another ice age.

8. Aliens Attack The Earth

The chance of encountering intelligent extraterrestrial life becomes greater every day. As of January 8, 2008, 217 planets have been discovered outside of our solar system and 2-3 new ones are found each month. Famous astronomer Carl Sagan believed there to be billions upon billions of planets in the universe. With such high numbers it is hard, if not impossible, to believe that there is no intelligent life in the universe besides human and that an alien invasion and destruction of Earth is impossible. It is theorized that it would not be a conflict between humans and aliens that would cause lead to our end but that the aliens would exploit Earth for her resources or merely disrupt the planet by mistake.

9. Global War

Although, tensions between world groups wax and wane causing the public to frequently go from worrying about a global war to forgetting about it, global war is a constant threat. It is believed that there are at least 20,000 active nuclear weapons in the world. A malicious use of these weapons or even an accidental nuclear exchange or misfire could be disastrous for the planet. Even more worrisome should be the treat of biological warfare. Using killer germs is cheap, they are also easy to produce and conceal. Even scarier, they can become impossible to control.

10. Ecosystem Collapse

Our biodiversity is vanishing. At least 30,000 new species become extinct each year, a higher rate than ever before in history. Every single organism on the planet is integrally intertwined with the life of others. To make our life easier in the here and now we are slashing and burning forests, slaughtering animals, transporting organisms from their original ecosystem to others, and introducing synthetic materials into the environment, just to name a few. We are already upsetting the checks and balances of the global ecosystem but have not yet seen a devastating consequence such as the extinction of pollinating insects leading to widespread crop failure and the eventual starvation of humans. Ecologist use the imagery of a "marginal tree," that once cut will throw our planet into chaos to explain the unpredictability of a cataclysmic ecological collapse.