Greates threat to mankind

[MangaAddict]

Expansion of the sun. Even though it would take billions of years to happen, and humans are pratically destroying themselves already.

Actually this is gonna happen one day because the sun will eventually turn into a red giant and vaporize the earth, how cool is that??

The continual renewal off deadly virusses.
Just look what hiv has done in a few decades, what is it 1/3 of africa now inflicted or something?
Just imagine what the next one is gonna do... and yes, there is going to be a next one.

With the amount of scientific research humans do and the stuff we experiment it wouldnt surprise me if we created a disease that wiped out mankind...