This book guides through the fascinating world of viruses and makes readers enjoy science in an accessible way. Virologist and author Professor Van Wilson imparts knowledge about what viruses are, how they work, and how much they impact life on Earth. The book equips the reader with the scientific basics behind virus function and presents the historic milestones of virus research and discovery. Well-known viruses such as HIV or Influenza are tackled alongside novel pathogens like coronavirus SARS-CoV-2. Professor Wilson explores where they come from and how they impact our society.