You have probably heard that insect populations around the world are collapsing… But why? Habitat loss and pesticide use both likely have a lot to do with it, but Avalon Owens argues in this talk that light pollution is another important—but seriously overlooked—bringer of the insect apocalypse. Light pollution is also possibly the only environmental pollutant that can be cheaply, easily, and instantly eliminated. The only thing preventing us from restoring our ecosystems is a lack of tolerance, both for dark nights and the many tiny beings that need them.