Most of the time, hail occurs as tiny pellets not much bigger than gravel or sand. But when the conditions are right, hailstones can be as big as golf balls or even baseballs! They crack car windshields, take down power lines, and even injure people outside when they fall. Readers learn lots of cool science about not just how hail forms, but what conditions need to be for hail to be destructive. Full-color photographs emphasize just how big hailstones can be and how much damage they can cause. Relatable sidebars tackle important details and highlight real-life hail events for interested readers.