This is a course about insects and how they influence everything we do. We will begin with a quick and colorful survey of the arthropods and then focus on insects and how they have adapted to the multitude of niches the planet offers. Insect physiology is a great place to begin. What did that mosquito do with the blood it just removed from you? How do bees communicate and why is that important? We will discuss how agriculture evolves to stay ahead of the insects and look at medical entomology, its historical role, the problems of insect-borne diseases and the new threats they pose.