The phrase "global cataclysm" refers to a worldwide event or disaster that causes widespread and severe destruction, altering the Earth's environment and significantly impacting human civilization. Full definition
So what we're saying is, we can wreck our wealth - producing ability, and we're still facing global cataclysm. (illconsidered.blogspot.ru)
An epic adventure about a global cataclysm that brings an end to the world and tells of the heroic struggle of the survivors. (adatingnet.com)
He gets the chance when their spaceship crash - lands on the planet Earth, which humans were forced to evacuate a thousand years earlier due to a global cataclysm. (csmonitor.com)