The Repair That Never Stops

In 2015, three scientists shared the Nobel Prize in Chemistry for discovering something remarkable happening inside every living cell. Tomas Lindahl, Paul Modrich, and Aziz Sancar mapped the mechanisms by which your DNA — a molecule constantly under assault from radiation, chemicals, and simple metabolic errors — repairs itself thousands of times every single day. Your genetic code sustains roughly 100,000 damaging events each day.…