Biochar is charcoal that is produced by pyrolysis of biomass, yet in the absence of oxygen, and is used as a soil ameliorant for both carbon sequestration and soil health benefits. Biochar is a stable solid that is rich in carbon and can endure in soil for thousands of years. Biochar is being investigated as a means of carbon sequestration, and it may be a means to mitigate global warming and climate change. It results from processes related to pyrogenic carbon capture and storage (PyCCS).