Can viruses only cause diseases? What if they are not that bad after all! What if viruses can help find answers to long-unsolved riddles of cancer treatment? Or help us understand our evolution better, or even fight climate change? Virology has become one of the latest and most researched branches of science in the last decade. Read further to understand how these microorganisms such as cyanophages, bacteriophages, virophages, are saving the world.