By Damian Carrington in The Guardian, 2016 On 7 July 2015, satellite images showed the Pacific Ocean with two typhoons, one tropical storm, one formation alert and one large area of increased convection. Photograph: JMA MTSAT-2/NOAA The destructive power of the typhoons that wreak havoc across China, Japan, Korea and the Philippines has intensified by 50% in the past 40 years due …