Aliens come because of the ozone hole

Aliens could attack us because of the increased amount of greenhouse gases. By that conclusions reached by NASA scientists. However, they do not exclude the possibility that aliens are nice and cooperative. Experts long pondering the possible developments in contact with an alien civilization. According to them, there are three scenarios - the aliens are malevolent to mankind, are favorable to us or infect neutrality. In its report, the researchers noted that the main reason being attacked is that the aliens begin to feel a threat that human civilization can be expanded in the universe. Indicator of our rapid development is the increased amount of greenhouse gases. Changes in the atmosphere can be detected in space by NASA are convinced. So panicked for fear conquer them, the aliens may decide to destroy the planet in order to prevent any possibility of expansion. "Pre-emptive strike against us is most likely in the early stages of human development, as later is more difficult to destroy civilization," say the researchers. It is alien to destroy us just to keep the Earth as a unique ecosystem, the newspaper "Telegraph". Scientists, however, are optimistic about the future of humanity, as the reduction of air pollution may postpone aggressive contact with a civilization. Sean Goldman, Department of NASA's planetary states that when a lot of aliens are things to fear - it's possible intruders to eat us, enslave or attack us simply lubricated with their bodies, and we stuck irreducible virus. Scientists warn that we must be careful in broadcasting signals to outer space. You should not spread information about the structure of our body - it can be used to develop weapons against earthlings.