LiveScience: On the western coast of Alaska, nestled against the Bering Sea, residents of the remote village of Newtok may soon become the country's first climate refugees. Like many Alaskan villages, Newtok sits atop permanently frozen soil called permafrost. In recent years, however, warming oceans and milder surface temperatures have melted the icy subsoil, causing the ground beneath Newtok to erode and sink. In 2007, the village already sat below sea level, and studies warned that the subarctic outpost could...