From the Archives: Paleontologist Dan Fisher is challenging scientific consensus about when people first came to the continent and how they may have changed the world around them.
a slightly cheesy flavor when Dan Fisher, a paleontologist at the University of Michigan, put it in his mouth. Every two weeks for the preceding six months, Fisher had pulled the carcass up from the bottom of a pond and cut off a hunk of flesh. His aim was to see how long it would keep in the cool waters. The tangy taste was the first sign of decay.
What Fisher saw happen to the meat is “very strong circumstantial evidence” for the idea that humans used ponds to cache their food, says Badgley. And that’s just one of the unconventional experiments Fisher has employed over his more than 40-year career. Inspired by early experiences investigating the natural world and human history, Fisher received his undergraduate degree and Ph.D. in geological sciences at Harvard University, where he studied horseshoe crabs. He went on to work at the University of Michigan’s Department of Geological Sciences and Museum of Paleontology. He began his career examining primitive echinoderms, predecessors to sea urchins, diving into work on their behavior and ecology.
But Fisher still had plenty of questions. If humans sank meat in water to protect it from scavengers, what did they do when ice covered the pond’s surface? How could early inhabitants melt it? Fisher used his children’s kiddie pool to find an answer. He put rocks on ice that formed in the water-filled plastic pool sitting in his backyard, observing the time it took for them to melt through.
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