The greatest threat, according to the WHO, to human health this century (7,6)
I believe the answer is:
climate change
(Other definitions for climate change that I've seen before include "Effect of 1" , "global warming" .)
I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.