If May 2020 was like any other spring, Daniel Bolnick, an ecologist at the University of Connecticut, would be wrapping up a semester of teaching and preparing to head into the field. He and as many as two-dozen collaborators would be fanning out to sites in Alaska and Canada’s Vancouver Island, where they would traverse lush forests with snow-capped mountains in the distance, and splosh into lakes and streams. By day, they would wade into the cold water to study threespine stickleback—metallic little fish that measure approximately two inches long…
