We’ve seen big declines in wild bee populations. That’s not just bad for the fuzzy little bees; it could drive up prices for almonds, blueberries, and other pollinator-dependent treats.

The challenge is knowing what would help them. Do we focus on preserving habitat and flowers? Or should we focus on certain pesticides? Is climate change behind this, too? It’s hard to say because bees are hard to study. It’s relatively easy to count long-legged pronghorns or wide-winged condors compared to counting the gnat-sized Perdita minima,…