Imagine an archaeological dig far in the future. Scientists are excavating a site somewhere in what was once North America, peeling back layers of dirt in search of the remnants of a vanished civilization. Millions of years having passed, there’s not much left, and the archaeologists must be diligent. But, as they scrape and sift, clues to this vanished people emerge, a peephole into a bygone culture.

What objects would these future archaeologists find? What specimens would they dust off,