deskpro2k3 on 18 August 2011
One thing aliens have to be careful of.
Earth atmosphere is full of particles of viruses, diseases and many pathogens that causes infection. They're are in the very air we breath, water we drink, and the dirt we walk around on. Humans and animals on this planet is immune to such harmful pathogens, many of which keeps evolving. Without such immunity those aliens wont last long.
If they got special suits..then thats just cheating lol. In a sense earth born viruses can win this for us lol.
