Japan’s Kishida cancels Asia trip after scientists urge preparations for a possible ‘megaquake’ The Associated PressJapan PM Fumio Kishida cancels trip as scientists urge preparations for possible “megaquake” CBS NewsJapan issues first ever ‘megaquake’ warning after magnitude 7.1 tremor near Nankai Trough Sky NewsMagnitude-5.3 earthquake hits Tokyo after Japan issued megaquake advisory Reuters.comJapan braces for potential massive quake after M7.1 temblor Kyodo News Plus