The Top 10 End of the World Scenarios of the Last Century

Here's an amusing look back in time by Popular Science magazine which summarizes 10 paranoid fears of humanity back in the 20th century.  Among humanity's freakouts include:

1) Destroyed by the dreaded death ray.

2) The Earth will spontaneously explode.

3) A doomsday device will be invented.

4) The Sun will grow too cold causing an ice age.

5) A wandering star will destroy our solar system.

6) The Sun will grow too hot causing us to burn up.

7) A comet could collide with the Earth.

8) Nuclear war armageddon.

9) Man will poison the oceans, causing the world to die.

10) The Moon could collide with the Earth.