If you look at a piece of a leaf or a drop of saliva through a microscope, what do you see? Cells are the basic building blocks of life and they make up every living thing, from plants to animals, from humans to bacteria! In Cells: Experience the World at Its Tiniest, readers ages 12 to 15 investigate cells and learn how they affect our health, reproduction, criminal investigations, and agriculture.More than 250 years ago, scientists discovered that all living things are made up of cells. Since then, cell science has been a foundational step on the path to understanding why living things function and develop and how we can use our knowledge of cells to improve human life. Through cell science, scientists have been able to create many things to help society, such as seeds that grow better in certain locations, which increases the amount of crops to better feed the world. The criminal justice system now uses DNA to prove whether people committed crimes or not, helping to...