The type of radiation that can be harmful to living tissue is known as ionizing radiation. This includes forms of radiation that carry enough energy to remove tightly bound electrons from atoms, creating ions. Common sources of ionizing radiation include X-rays, gamma rays, and particle radiation like alpha and beta particles. Exposure to ionizing radiation can damage cellular structures, including DNA, potentially leading to mutations, cancer, and other health issues. Therefore, understanding and managing exposure to this form of radiation is critical for health and safety.