Are we responsible for how we behave? If so, should we feel bad about it? And if the answer to those two is 'yes' and 'yes' respectively, how do we change our behaviour? How much of 'behaviour change' is about nudging or encouraging individuals to change, versus how much is banning bad things and making good things easier and cheaper? And are simple answers stupid? (Spoiler: yes.) Joining Dave this month is the esteemed Professor Lorraine Whitmarsh MBE. Lorraine is Prof of Envir...