Brian Switek talks about the never-ending, fruitless search for Big Foot and other cryptozoological tales.
Field biologists study elusive living species by using camera traps, analyzing genetic data from scat, and following footprints. There should be a wealth of compelling evidence from such sources—but all we have are an abundance of purported sightings. Given the number that Sasquatch clubs busy themselves with, I should be able to look out my window each morning and see Sasquatch families raiding my trash cans for leftovers. Bigfoot aficionados protest that they have found tracks, hair, and other evidence. But photos of mangy black bears and footage that would make even the director of Cloverfield nauseous from all the shaking show nothing more than a lack of rational skepticism.