You knew they'd bring aliens into the picture eventually.

Battered by growing skepticism about their climate conclusions, global warming advocates have cast about wildly for a way to stem the tide. And they appear to have found the answer; aliens are more likely to destroy us because of our greenhouse gas emissions.

For sheer bravado, this one has no equal. And for its sheer stupidity, we should be thankful. The Guardian:

It may not rank as the most compelling reason to curb greenhouse gases, but reducing our emissions might just save humanity from a pre-emptive alien attack, scientists claim.

Watching from afar, extraterrestrial beings might view changes in Earth's atmosphere as symptomatic of a civilisation growing out of control - and take drastic action to keep us from becoming a more serious threat, the researchers explain.

This highly speculative scenario is one of several described by a Nasa-affiliated scientist and colleagues at Pennsylvania State University that, while considered unlikely, they say could play out were humans and alien life to make contact at some point in the future.

[...]

"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," the authors write.

Even if we never make contact with extraterrestrials, the report argues that considering the potential scenarios may help to plot the future path of human civilisation, avoid collapse and achieve long-term survival.

NASA should probably talk to the SETI people (Search for Extraterrestial Intelligence). If they did, they'd discover that most experts believe that if aliens exist, their thought processes - logic, reason, perceptions - would be, well, ALIEN. They wouldn't reason the same way we do. And to ascribe a logical thought process (humans ruin their own planet therefore humans must be destroyed) to an unknown alien civilization is beyond idiocy. It enters the rarified milieu of the mentally deranged - people who would spend all day banging their heads against a wall if allowed.

Don't you love the thought of "green aliens?" E.T. recycling. E.T. not burning fossile fuels. Of course, they probably use some form of nuclear power but hey! nobody's perfect, right?

I'm thinking this article might be a hoax of some kind. That's the only rational explanation for a concept that is alien to logical thinking.