The process of scienceallows us to gain knowledge about the universe- constructing new ideas that illuminate the world around us. These ideas are inherently tentative, but as they cycle through the process of science again and again and are testedand re-tested in different ways, we become increasingly confident in them. The benefits of science can be seen in areas such as: technology, medicine, food production, and environmental protection. For example, medical technologies like CAT scans and X-rays have allowed us to diagnose and treat disease more effectively; advances in food production methods have made it possible to feed a growing population with fewer resources; and protective measures like sunscreen have helped to protect the environment from harmful substances.