People and Planet: “There are many things we do not know about the future”, says Lester Brown in this call to arms to save the environmental underpinnings of human society. “But one thing we do know is that business as usual will not continue for much longer. Massive change is inevitable. Will the change come because we move quickly to restructure the economy or because we fail to act and civilisation begins to unravel?” Saving civilization will take a massive mobilization, and at wartime speed. The …