Source: United States & Canada – South China Morning PostThe recent eruption of the underwater volcano near Tonga was several hundred times stronger than the explosive force of the atomic bomb dropped over Hiroshima, US space agency Nasa said.“This is a preliminary estimate, but we think the amount of energy released by the eruption was equivalent to somewhere between 4 to 18 megatons of TNT,” Nasa scientist Jim Garvin said in a statement.“That number is based on how much was removed, how resistant the rock was, and how high the eruption cloud was…Read More