Using a powerful torch, Aliki Buhayer-Mach momentarily drenches a nearby mountain top in light, straining to see if wolves are lurking in the shadows. Swiss NGO OPPAL has enlisted hundreds of volunteers this summer to chase predatory wolves away from grazing livestock. Photo: AFP If the predator were to get past the electric wires stretched around this high-altitude pasture in the Swiss Alps, the 57-year-old biologist knows "it would be a massacre". She and her 60-year-old husband Francois Mach-Buhayer -- a leading Swiss cardiologist -- have settled in to spend the night watching over some 480 sheep grazing in the remote mountains near the Italian border. The pair of unlikely herders are among several hundred people volunteering this summer through OPPAL, a Swiss NGO seeking a novel way to protect wolves, by helping chase them away from grazing livestock. "Our goal is that by the end of the summer season, the livestock are still alive... and the wolves too," OPPAL
