Imagine you’re an insect cruising through the air. Suddenly, you realize you’re heading straight for a spider web. You’re doomed. But wait – you can still escape by slipping through one of the gaps. Spider webs are, after all, more gaps than web. You aim between the sticky threads – it’s going to be a close call, but you’re going to make it.
Then, as you pass through, the threads snap towards you … and you’re a spider’s dinner!
It sounds impossible that the threads of a spider web could actively reach out for prey, yet recent studies show that it is not only possible, but may be yet another ingenious spider strategy for capturing insects on the fly. How do webs do this? Static electricity. It turns out spider webs are attracted to the static charge on flying insects. » Continue Reading.