Salon has an interesting book review dealing with evolution (past and future) and extinction events. Here's a sample quote:
But Ward's Big Idea is a fascinating one. (Good thing, too, as this isn't the first book he's written on the topic.) Unlike the doomsayers out there, he doesn't think there's another mass extinction looming. Rather, he's convinced it's well underway, and that the worst is already over. Most of the big mammals that are going to die off already have. Among those no longer with us are the mastodons, the mammoths, the saber-toothed tiger, the giant short-faced bear. "It is visible in the rear-view mirror, a roadkill already turned into geologic litter -- bones not yet even petrified -- the end of the Age of Megamammals," he writes.
But Ward's Big Idea is a fascinating one. (Good thing, too, as this isn't the first book he's written on the topic.) Unlike the doomsayers out there, he doesn't think there's another mass extinction looming. Rather, he's convinced it's well underway, and that the worst is already over. Most of the big mammals that are going to die off already have. Among those no longer with us are the mastodons, the mammoths, the saber-toothed tiger, the giant short-faced bear. "It is visible in the rear-view mirror, a roadkill already turned into geologic litter -- bones not yet even petrified -- the end of the Age of Megamammals," he writes.