The whole world finds it illuminating (8)
I believe the answer is:
sunlight
This could be a double definition.
'the whole world' is the first definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'it illuminating' is the second definition.
The definition suggests a singular noun which matches the answer.
'finds' is the link.
Can you help me to learn more?
(Other definitions for sunlight that I've seen before include "Form of illumination" , "What's illuminating, naturally" , "port?" , "Ray" , "Solar rays" .)