If you have a question you’d like an expert to answer, send it to [email protected]. How many types of insects are there in the world? – Sawyer, age 8, Fuquay-Varina, North Carolina ...

Interestingly, research suggests they favor Type O blood the best ... and can come through even the smallest of openings. For flying insects that are hard to keep out, I use the Safer Home ...

All have compound eyes, which means insects see very differently from the way people see. Instead of one lens per eye, they have many: a fly has 5,000 lenses; a dragonfly has 30,000. These types ...