Ecological grief is a feeling of sadness and loss caused by worrying about the future of the planet and the creatures that live on it. It is often caused by watching changes in the Earth—for example, when people see places that used to be beautiful, but now that natural beauty is gone due to things like pollution, deforestation, or droughts. It is a feeling of sadness and grieving for the Earth—just like people grieve for someone they care about when they pass away, humans can grieve for the Earth when its environment changes in sometimes devastating ways.