So-called “zombie fires” in the peatlands of Alaska, Canada and Siberia disappear from the Earth’s surface and smolder underground during the winter before coming back to life the following spring. These fires puzzle scientists because they appear in early May, way ahead of the usual fire season in the far north, and can reignite for a number of years. So-called “zombie fires” in the peatlands of Alaska, Canada and Siberia disappear from the Earth’s surface and smolder underground during the winter before coming back to life the following spring. These fires puzzle scientists because they appear in early May, way ahead of the usual fire season in the far north, and can reignite for a number of years. Environment Phys.org – latest science and technology news stories