Over the last 40 years, the world’s population has almost doubled, to seven billion, but global exposure to tropical cyclones has almost tripled. More than 100 million people experience floods each year, and roughly 370 million live in earthquake-prone cities.
在过去的四十年里，世界人口将近翻了一番，达到了70亿。但全球受到热带风暴影响的人口数量却上涨了2倍。超过1000万的人口每年遭到洪水的侵袭。大约3.7亿的人口生活在地震多发区。