This Sunday novelist Ian McEwan will be in conversation with the Guardian's deputy editor Ian Katz as part of the Guardian Open Weekend.

The pair will be discussing climate change, politics and writing. The event is now sold out but that doesn't mean you have missed your chance to question the author of Saturday, On Chesil Beach and The Cement Garden. Tell us what you would like to ask and a selection of your questions will be posed to the Man Booker winner at the talk.