Trees Weathered the Ice Age

During the last glacial period, from about 100,000 to 12,000 years ago, most northern parts of the world were covered in sheets of ice, wiping out any possibility of vegetation.Well, not quite. It seems that pine and spruce trees, at least, were able to survive in certain spots in Scandinavia, according to DNA analyses reported in today’s issue of Science.Read more at...Smithsonian's Surprising Science, March 2012.