Researchers have developed a tool that can bend DNA strands using light. The work represents a new way to probe the genome. Shown here, from an unrelated study, are chromosomes (blue) inside a human ...

An illustration of light purple Cas9 enzyme being guided to light blue DNA against dark blue background. The enzyme Cas9 (top) can cause double-strand breaks in DNA (bottom). Credit: Shutterstock ...

Every time we step outside, our cells are exposed to ultraviolet (UV) radiation, which is known to cause deoxyribonucleic acid (DNA) damage. While our bodies have built-in repair mechanisms to undo ...