The Environmental Protection Agency (EPA) cracked down on lead-based products—including lead paint and leaded gasoline—in the 1970s because of its toxic effects on human health. Scientists at the ...

One of the traits that we usually use to physically describe people is their hair color. Hair is a useful descriptor because it varies so much among us. Melanin is the molecule responsible for the ...

What if our hair told the story of the world's diversity? From jet black to fiery red, some hair colors are much more common ...

The FBI DNA hair sample Nancy Guthrie case has entered a decisive phase, with federal investigators now analyzing newly obtained genetic data that could change everything. In a case where time matters ...