Gaia philosophy (also called "Gaianism") is a way of thinking that comes from the Ancient Greek goddess Gaia. The idea behindGaia philosophy is that the Earth is like one big living organism, and all the plants, animals, and people are part of it. People who practice Gaia philosophy think that it is important to care for the Earth, because when the Earth is healthy, humans can be healthy and happy too. They believe that by taking care of the environment and treating it with respect, we can make sure that the Earth stays healthy and able to support us for many years to come.