There is no unanimity on the hypothetical global warming crisis  

D.A.
Many scientists  believe that human induced global warming is not proved and there is much uncertainty on this issue. 

I enclose two videos showing high level climate and marine scientists stating their opinions and they also have many doubts. 

https://www.youtube.com/watch?v=C35pasCr6KI&spfreload=5

https://www.youtube.com/watch?v=ap6YfQx9I64