By turns delightful and serious discussion (and links roundup) of the teaser, FREAKOUT ALL OVER THE INNERTUBES, and explanatory voices of reason that emerged this week around NASA’s arsenic-in-a-pinch-using microbes from Mono Lake (plus a brief coda on an invader we’ve been struggling with for a while now: HIV) at On science blogs this week: Alien abductions (NASW).