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Virus Explorer

This interactive module explores the diversity of viruses based on structure, genome type, host range, transmission mechanism, and vaccine availability.

Stopping Mosquito-Borne Disease

This tutorial introduces students to vector-borne disease with a focus on dengue fever, which is transmitted by mosquitoes. Students also learn about strategies designed to stop the spread of disease by interfering with the mosquito life cycle.

Using DNA to Trace Human Migration

This tutorial describes how scientists determined that all living humans originated from populations in Africa. Some of these populations migrated out of Africa less than 100,000 years ago.