Ice crystals are tiny, beautiful structures that form when water vapor freezes in the atmosphere. They can take on various shapes, such as hexagons or needles, depending on the temperature and humidity. When these crystals cluster together, they create snowflakes, each one unique and intricate. These delicate formations are not just pretty to look at; they play a crucial role in our weather. When enough ice crystals gather, they can lead to snowfall, which blankets the ground and affects the environment. Understanding ice crystals helps scientists study climate change and predict weather patterns.