Mysterious seismic event that shook the earth for 9 days was triggered by a 650-foot tsunami in Greenland, researchers say CBS NewsA rockslide-generated tsunami in a Greenland fjord rang Earth for 9 days ScienceWhat Greenland’s nine-day mega-tsunami tells us about climate change FRANCE 24 EnglishA rumble echoed around the world for nine days. Here’s what caused it. The Washington PostA landslide triggered a 650-foot mega-tsunami in Greenland. Then came something inexplicable CNN