Good facts about natural phenomena (4,2,3)
I believe the answer is:
acts of god
'natural phenomena' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'good facts about' is the wordplay.
'about' is an anagram indicator.
'good'+'facts'='goodfacts'
'goodfacts' with letters rearranged gives 'ACTS OF GOD'.
Can you help me to learn more?
(Other definitions for acts of god that I've seen before include "disasters, naturally" , "floods, say" , "Uncontrollable events caused by deity?" , "Events beyond human control" , "Natural and unavoidable catastrophes" .)