Phytoremediation is a process that uses plants to remove, degrade, or contain contaminants in the soil, water, or air. This environmentally-friendly technology utilizes the natural abilities of certain plants to absorb and metabolize pollutants, such as heavy metals, pesticides, solvents, and other harmful substances. Phytoremediation is a cost-effective and sustainable approach to cleaning up contaminated sites, and has been used successfully in a variety of environments, including industrial sites, landfills, and agricultural areas. This field of research continues to advance as new plant species are identified and engineered to be more effective at removing pollutants from the environment.