Listen to Vaclav Smil in conversation with Andrew Revkin, environment writer for the New York Times at http://q2cfestival.com/play.php?lecture_id=8251. This is a fascinating conversation. Smil steadfastly does not predict the future and gives commonsense and numerically based reasons why the pessimists or optimists about climate change and the future of energy could be right. And, at the end of his talk, Revkin asks him for one piece of advice for young people. His answer is impassioned and well worth hearing, and isn't what you might have expected from the whole conversation.