Latest Thure Cerling Stories
Researchers say the diet and behavior of elephants, evidenced by the chemical makeup of their tail hairs, shows how they compete with other species.
Researchers at University of Utah reported Monday that a single strand of hair can reveal a history of which areas within the United States a person has been living or spending time.
CSIs now have a new tool in their belt: the chemical signatures left by local drinking water in human hair. Scientists at the University of Utah have found that the ratios of different forms of hydrogen and oxygen in local drinking water vary from region to region across the country.