Non-partisan political societies are well represented at the university, with the York Student Think Tank – which produces research in collaboration with national policy organisations such as IPPR, New Generation Society – an informal debating society, and The York Union Society – which competes in inter-varsity debating tournaments against other universities. There are also very active party political societies on campus with the University of York Labour Club, the University of York Liberal Democrat Society, the University of York Conservative and Unionist Association and the University of York Green group; campaigning on issues both on and off campus, as well as organising debates and talks by high-profile speakers. There is also a branch of People and Planet, which campaigns on environmental and ethical issues.