Contamination is a research area that focuses on the presence of harmful substances or pollutants in the environment, food, water, air, and other sources. These contaminants can include chemicals, heavy metals, pesticides, pathogens, and other substances that can have negative impacts on human health, wildlife, and ecosystems. Researchers in this field study the sources, transport, fate, and effects of contaminants, as well as ways to detect, prevent, and mitigate their presence in various environments. Contamination research plays a crucial role in protecting human and environmental health and promoting sustainable practices.