Nowadays I read a lot about people's bucket list. For members not familiar with the concept, a bucket list are a list of things they really want to do before they die. For example, some people might really want to try parachute jumping or riding an elephant. But when it comes to us scientists, surely we have a bucket list too. For example, it might be some science theory we really want to understand or even find, or it might be some book we really want to read. If you were to have a bucket list, what would be on it?