But that problem was simpler; we knew the source, which made a solution readily available. In the case of the German study, we have identified the problem—insects are declining—but the cause remains elusive. And the cost of not finding a solution (and quickly) is high. Insects are an integral part of our food web. Not only do they pollinate our food, but they also help create the very soil in which we plant crops. And some insects, like ladybugs, help keep the ones we considers to be pests in check. Meanwhile, insect populations aren't declining equally; human pests like mosquitoes and deer ticks are on the upswing due to our warming climate. And other pests, such as ones that target our crops, are evolving to become resistant to our pesticides. So as we inadvertently kill off the bugs that benefit us, the ones we loathe may flourish all the more.