"Climate is a rather elusive entity", wrote Helmut Landsberg in 1950 as he sorted out some twenty or so competing definitions. This volume of "Osiris" explores the complexities in understanding what climate means from a historical perspective. The vo...

The study of group actions is more than a hundred years old but remains to this day a vibrant and widely studied topic in a variety of mathematic fields. A central development in the last fifty years is the phenomenon of rigidity, whereby one can cla...

Whether it is used as an icebreaker in conversation or as the subject of serious inquiry, "the weather" is one of the few subjects that everyone talks about. And though we recognize the faces that bring us the weather on television, how government me...

The Great Plains were once among the greatest grasslands on the planet. But as the United States and Canada grew westward, the Plains were plowed up, fenced in, overgrazed, and otherwise degraded. Today, this fragmented landscape is the most endanger...