New research suggests that explanations based only on climate may not fully account for the major decline of the lowland ...

However, 97 percent of climatologists claim that unless action is taken to reduce greenhouse emissions, the Earth will warm and pass climate thresholds that could challenge civilization. Brown will ...

“Great civilizations are not murdered. Instead, they take their own lives.” The great historian Arnold Toynbee concluded this in his 12-volume magnum opus A Study of History. It was an exploration of ...