... rivers, streams, and creeks with their attendant ponds, swamps, and small lakes that made up the area. This now-ancient place must have been alive with animals, big and small, and the sheer number ... extinction came an aftermath of mod-ernization. These beds were Paleocene in age, and late Paleocene at that, strata that had formed no more than five million years after the K-T. And unlike ... level, and cli-mate.” This conclusion made no sense at all. How could a comet impact create volcanism or a change in sea level? Much was known about what large-body impact on Earth could or...