A new study theorizes that ancient Egyptians constructed the world's first pyramid using much more advanced technology than some Egyptologists believe.

The Step Pyramid of Djoser, erected some 4,500 years ago, may have been built through the use of a unified water-powered hydraulic lift system.

NEW YORK — Scientists have detected cosmic waves that sound like birds chirping in an unexpected place. These bursts of plasma, called chorus waves, ripple at the same frequency as human hearing.