Man And Nature: Enviro-fanatics are sterilizing themselves to reduce their "carbon footprint." We dread where their nihilistic ideology — that mankind is an evil planetary force — will lead next.The U.K.'s Daily Mail newspaper last week featured the beaming face of one Toni Vernelli, a British environmental activist who had sterilization surgery at the age of 27 because she considers children "a sinister threat to the future." It was no Monty Pythonesque spoof. Two years earlier, despite being on birth-control pills, Vernelli got pregnant and had an abortion because "it would have been immoral to give birth to a child...