The principles of sound isolation inside an anechoic chamber, the quietest places on Earth.

The pyramid of Menkaure, the third-largest in Giza, has been found hiding air in two pockets. Archaeologists were surprised when scans revealed these pockets, which they say are an anomaly. Their ...

Nestled in the quaint town of Seward, Nebraska, sits a monument to American eccentricity so delightfully bizarre it demands your attention: the World’s Largest Time Capsule, a concrete pyramid housing ...