Biology is the study of life through the observation of structure, function, reproduction, growth, origin, evolution, and behavior of living organisms and their relation to their natural environment. Foundations of modern biology include cell theory, evolution, genetics, homoeostasis, and energy.
Biologists are helping improve life in many ways, including the discovery of antibiotics and other medicines, a better understanding of the cellular processes leading to cancer, and the development of new crops. Information from the Human Genome Project is being used to identify genes and proteins involved in many disease processes. But much is still unknown.