By Shane Cronin, University of Auckland This article is republished from The Conversation under a Creative Commons license. Read the original article. The Kingdom of Tonga doesn’t often attract global attention, but a violent eruption of an underwater volcano on January 15 has spread shock waves, quite literally, around half the world. High-resolution Himawari satellite … Continue reading Why the Volcanic Eruption in Tonga Was So Violent, and What to Expect Next