What on earth is often called for these days? (5)
I believe the answer is:
peace
'what' is the definition.
The definition and answer are not the same part of speech.
'on earth is often called for these days?' is the wordplay.
'on' indicates putting letters inside (as in clothing 'on' a person).
'earth' becomes 'E'.
'is often called for' becomes 'pa' (I can't justify this - if you can you should give a lot more credence to this answer).
'these days?' becomes 'ce' (I've seen this in other clues).
'e' inserted within 'pa' is 'pea'.
'pea'+'ce'='PEACE'
Can you help me to learn more?
(Other definitions for peace that I've seen before include "[STILLNESS]" , "''And I shall have some ... there, for ... comes dropping slow'' (WB Yeats)" , "'Calm, harmony (5)'" , "State of freedom from war" , "Absence of conflict" .)