Stop putting the earth into a box (5)
I believe the answer is:
cease
'stop' is the definition.
(I know that stop can be written as cease)
'putting the earth into a box' is the wordplay.
'putting the earth' becomes 'e' (I can't justify this - if you can you should believe this answer much more).
'into' is an insertion indicator.
'a box' becomes 'case' (I've seen this in another clue).
'e' placed inside 'case' is 'CEASE'.
Can you help me to learn more?
(Other definitions for cease that I've seen before include "Political group" , "Come to an end" , "Discontinue" , "Culminate" , "Desist" .)