For more than 4,500 years, Egypt’s Great Pyramid of Giza has intrigued explorers, historians, and archaeologists, holding mysteries that have long eluded discovery. Now, a tiny, purpose-built robot ...

There's an alternate explanation for the huge void inside the Great Pyramid -- and while it's a bit more prosaic than a secret chamber of riches that hasn't seen the sun in thousands of years, it's no ...