A pre-emptive strike [from extraterrestrials] would be particularly likely in the early phases of our expansion because a civilization may become increasingly difficult to destroy as it continues to expand.
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. 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.
Emphasis is mine.
Behold the grand spectacle of science in this, the second decade of the 21st century. The quote is from an actual scientific paper, passing actual peer review. The paper containing the quote was published in Acta Astronautica (Baum et al. ,2011, AA 68(11-12): 2114-2129). The Guardian (p) is actually taking this horse manure seriously here.
What is amazing about this, is not even that we have a bunch of people writing this drivel. No, it is the fact that two or three reviewers, plus the editor of the journal, thought it was a completely logical, scientifically responsible and (dare I say it?) sane statement to make.
Far be it from me to raise the anxiety of parent readers with college aged children. But these people are beyond redemption. They should not be allowed out without supervision. Yet it is these people that are educating your kids. It is these people you are lavishing the quite considerable tuition fees on. Them and the (equally insane, apparently) boards that employ them.
The demise of science, indeed.