NASA-affiliated "scientists" at Penn State have seriously beclowned themselves on the subject of global warming.
They speculate that extraterrestrial environmentalists could be so appalled by our planet-polluting ways that they view us as a threat to the intergalactic ecosystem and decide to destroy us.
The thought-provoking scenario is one of many envisaged in a joint study by Penn State and the NASA Planetary Science Division, entitled "Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis." ....
It speculates that aliens, worried we might inflict the damage done to our own planet on others, might "seek to preemptively destroy our civilization in order to protect other civilizations from us."
"Humanity may just now be entering the period in which its rapid civilizational expansion could be detected by an ETI because our expansion is changing the composition of Earth's atmosphere (e.g. via greenhouse gas emissions), which therefore changes the spectral signature of Earth," the study says.
"While it is difficult to estimate the likelihood of this scenario, it should at a minimum give us pause as we evaluate our expansive tendencies."
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