1. The Science Behind Cell Lifespans
How do scientists know how long your cells live? The answer lies in innovative techniques like carbon-14 dating, originally developed for archaeology. After nuclear bomb testing in the 20th century, carbon-14 levels spiked worldwide, creating a “clock” in human tissues. By measuring these traces, researchers can pinpoint when a cell was born. Combined with advanced imaging and molecular analysis, these methods have revolutionized our understanding of the body’s continuous renewal. Studies using these techniques are transforming cell biology, as documented by Scientific American.