Students learn about insects at Farm Day in the City

"Every single insect plays a role, even if it's only purpose is to get eaten by something. Everything is important," said David Haviland an entomologist at the University of California's Extension. Haviland's approach to pests is called Integrated Pest Management (IPM). To give homeowners and farmers important information regarding pest management, scientist and professors at the University of California created a free online guide.