Symbols have always played a significant role in human civilization. Various cultures have employed symbols as a means of self-expression. From the prehistoric era, men would engrave their life ...

While humans have been making their mark on the surfaces of this Earth for at least tens of thousands of years, it's difficult to pinpoint the exact moment our impulse to record what we saw tipped ...

With few exceptions, ancient humans painted the same 32 symbols in caves all over Europe. Paleoanthropologist Genevieve von Petzinger asks: What were they trying to say to each other — and to us?

Here’s your guide to understanding the oldest to newest U.S. symbols. (See figure.) Generations of cellular and Wi-Fi icons that you can read explained in the main article.

AI-assisted research nearly doubles the number of known Nazca geoglyphs, ancient symbols formed in the ground by moving stones or gravel that date back 2,000 years. CNN values your feedback 1.