I would like to think this new study was a joke like that one about the affect of different AC/DC lead singers on decision-making.
The study basically appears to be a transcribed version of some stoner late-night bull session imagining different contact scenarios with aliens. But one of the conclusions is hilarious. The Guardian describes the "logic"
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 scientists at Nasa and 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.
Every time you turn on an incandescent light bulb, ET nukes someone in China. Or something. Personally I think it is at least as likely that broadcast copies of Mariah Carey's "Glitter" radiating out from Earth at the speed of light will get us pounded by meteors from space. More here.