Problems on a planet called EARTH!

Which one of following is gravest of all problems, currently prevailing in world!!???

1. Poverty and Hunger
   
2. George Bush
   
3. Female fetus killing
   
4. Pamela Anderson [those who opted for this, dontcha dare to come to my blog ever again… It was a trick question!!]
   
5. Crime
   
6. Microsoft Windows
   
7. Nuclear Warheads and Wars
   
8. Intricate hyperbole malfunctioning in teleportation module of KBH-232
   
9. Toxic Waste
   
10. Animal Killing and extinction
    
11. Ozone depletion
    
12. Inclination of human species towards nakedness
    
13. Pollution
    
14. Fashion TV [hulloo…..??? That’s another one of my trick question you sicko!!]
    
15. Alcohol and Drugs
    
16. AIDS, Common Cold and other deadly diseases! [If you did not know, Cold does not have a CURE!]
    
17. Terrorism
    
18. Child Labor and exploitation
    
19. Farting in public [Maybe we can cover it under pollution]
    
20. Population Explosion
    
21. Extra terrestrial Invasion
    
22. Human Rights
    
23. Harry Potter
    
24. Death
    
25. This Blog! [$#@@#$ off!! NOW!! You Dope! Why did u come here in first place?]
    

I would be grateful, if you could leave some encouraging comments and share your views!!