"The depletion of water resources is a worrisome trend that impacts much of the world," insisted Dr. Sutton.
As far as I can tell, the only mistake is the end of the quote, where the comma should be within the quotation marks.
Is very simple, although the term "chaser" may not be as commonly used as it was when John Collier wrote his story. A chaser is a drink that is taken to follow the first alcoholic drink.
I think a colon should be placed after approached, included, and cultures.
Hope this helps!
To hit someone
In the head slowly
