Former monk and long-time BSWA president Sol Hanna talks about human history, economics, the environment and the challenges we're likely to face in the future. [b]Note:[/b] During the Rains Retreat period, a time when all our own monks and nuns go on 3 months retreat and stay at their respective monasteries as much as possible, we still have the normal Friday evening Dhamma talk - but given by a fascinating array of Buddhist lay persons and special guest teachers from other traditions.