Lasers are typically used to remove tattoos from the skin with mixed results. These tight beams of light can also reveal the ...

WASHINGTON (AP) — For more than 5,000 years, humans have adorned themselves with tattoos. In a new study, researchers used ...

There's a lot that we don't know for sure about the Inca Empire, because we have conflicting accounts among Spanish ...

From the quipu to the conquistadors, writer Rob Rath talks about cool stories we couldn't quite squeeze into the series, as ...