Science is the study of both processses and occurances within the natural world and how they relate to human beings. Science studies the maintaining of checks and balances within nature and how we can objectively explain phenomena which we may not immediately understand.
Science concerns itself with the past, present, and future of human life.
Science is where the cure for deadly diseases can be found and can be made. Not all science is positive, it has been used for mass destruction and death. Billions of dollars go into the studies where science is the main recipient. Years may pass before success can be realized or even occur in the studies this money goes for. Cancer, M.S. and AIDS are just three studies that science concerns themselves with.