You probably see the dollar bill every day, but have you ever thought about the symbols on the dollar bill and what they mean ...

Humans have been getting ink for at least 5,200 years. Here are some of the most intriguing ancient tattoos, from cultic symbols to complex horse motifs. The remains of the intricately tattooed ...

Anthropologists have spent decades documenting a mysterious collection of symbols etched into the Peruvian desert, depicting everything from human decapitation and domesticated animals to knife ...

An analysis of ancient “nailed heads” from Spain found some local skulls, likely symbols of respect, and foreign ones, likely symbols of intimidation. Photo from the Autonomous University of ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Described in study ...