Contact: Margaret Nagle (207) 581-3745 When the oceanic phenomenon El Niño strikes every four to seven years, it wreaks havoc on the world’s weather patterns, fishing and agriculture. University of Maine anthropologist Dan Sandweiss wants to know how ancient civilizations coped with these blows to their way of life. For the past five years, Sandweiss read more Evidence of Ancient Ocean Upwelling During El Niño Off Peru’s Coast Provides Climate Change Clues