You thought that wild weekend from months ago was ancient history? Think again. While blood tests only catch drug use from the past few days and urine tests stretch to maybe a few weeks, there’s a ...

Hair analysis could be the key to understanding adolescent drug usage, as a new study uncovers almost double the number of children were found to be using substances than those who admitted to in a US ...

Research provides the first-ever high-resolution, cell-resolved map of the human scalp during early aging. In A Nutshell Hair ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. High levels of lead ...

Last year, researchers sequenced the genome of famed composer Ludwig van Beethoven for the first time, based on authenticated locks of hair. The same team has now analyzed two of the locks for toxic ...

Fifty-one people currently serving sentences in Colorado prisons will have their cases probed by state law enforcement and University of Colorado law school professors for potentially faulty hair ...

Women in Indigenous communities living near artisanal and small-scale gold mining operations in Peru and Nicaragua have high levels of mercury in their hair, a new analysis suggests. Researchers say ...