Publish again about children (7)
I believe the answer is:
reissue
'publish again' is the definition.
('issue' can be a synonym for 'publish' so perhaps 'reissue' is OK for 'publish again')
'about children' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'children' becomes 'issue' (issue can mean someone's offspring).
're'+'issue'='REISSUE'
(Other definitions for reissue that I've seen before include "A second impression, perhaps" , "Put out (eg, book) again" , "Old record" , "Publication reprint" , "Send out again" .)