Alien may destroy Earth say researcher

[Flamel]

Researchers suggest that alien races could see us as a long-term threat to the environment.

""Green" aliens might object to the environmental damage humans have caused on Earth and wipe us out to save the planet."

"These scenarios give us reason to limit our growth and reduce our impact on global ecosystems. It would be particularly important for us to limit our emissions of greenhouse gases, since atmospheric composition can be observed from other planets,"

http://www.guardian.co.uk/science/2011/a...ilisations