By about 2050, the human population is expected to reach nine billion. Those billions will be seeking food, water and other resources on a planet where humans are already shaping climate and the web of life. Will we overheat or innovate, conserve or despoil, crash or round the curve with a few scrapes? Environmental journalist Andrew Revkin presents an exploration of ways to share and shape ideas that can foster progress on a finite planet. He focuses in particular on the unique role of universities as hubs of innovation, learning and, most important, doing. (#24125)