Researchers have unveiled a revolutionary light-based cancer treatment that kills up to 99% of cancer cells without chemotherapy or radiation. This breakthrough, known as photodynamic therapy 2.0, uses targeted light pulses to activate special molecules that destroy cancer cells with extreme precision. • The treatment uses light-activated nanoparticles that seek out tumors and destroy them from within. • Unlike chemo, it does not damage healthy cells, reducing pain, fatigue, and long-term side e