The newspaper is an official feature writtten by Club Penguin staff. However you can be part of it too! There are interactive features that let you send jokes, riddles, comics, pictures and etc to the staff, by clicking the "WE NEED YOU!" text at the first page of the Newspaper.
If they like your submissions, they may be featured in the newspaper. You can also send questions to Aunt Arctic, in which she will answer in an "Aunt Agony" style column.