A roughly nine-meter corridor sits sealed behind massive stone chevrons on the north face of the Great Pyramid of Giza, ...

At 146.5 m (481 ft) high, the Great Pyramid stood as the tallest structure in the world for more than 4,000 years. Today it stands at 137 m (449.5 ft) high, having lost 9.5 m (31 ft) from the top.

Andrew Bloomenthal has 20+ years of editorial experience as a financial journalist and as a financial services marketing writer. Hiroko Masuike/Getty Images A pyramid scheme funnels earnings from ...

In the world of archeology, few tools have revolutionized the field as much as ground-penetrating radar (GPR). This geophysical technique uses radar pulses to image the subsurface. Similar techniques ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Gunung Padang is an Indonesian pyramid that sits on top of an ancient volcano and could show evidence of Ice Age humans possessing advanced technology. Since the 1980s, a number of in-depth surveys ...

Göbekli Tepe predates Stonehenge by 6,000 years — and it's even more mysterious. Its stones are decorated with indecipherable ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

Ever since humans began building, they’ve been building up. Throughout the millennia, our constructions have reached higher and higher into the sky, spurred by various motivations: religion, democracy ...