It is important to remember that we as humans are part of the environment. With over 6 billion of us on Earth, our combined actions also have a big impact on the environment. However, at least we are aware of that impact. We can do things as individuals and we can find ways to work together to lessen the detrimental impacts of billions of people. Environmental science fair project ideas explore such topics as air quality, water quality, the effects of climate change, and many others.