If you've spotted a roach or two walking around your kitchen, there's probably more. Treatment relies on knowing which ...

The German cockroach is the most widespread cockroach species in the world. But despite its name, it can be found on every continent except Antarctica. QIAN TANG: Yet nobody knows where they come from ...

The German cockroach evolved to live only in human environments. This means it's very good at adapting to pest control methods — even if it means changing its mating rituals. And now we turn to ...