Sentence:  But I was reading a statement that either you made or was part of your movie, “An Inconvenient Truth”, and it said we have just 10 years to avert a major catastrophe that could send our entire planet into a <WSD>tailspin</WSD> of epic destruction involving extreme weather, floods, droughts, epidemics and killer heat waves beyond anything we have ever experienced. 
Meaning of the word marked with <WSD> tags:  Any sharp, sustained, often uncontrollable descent or decline.