Scientists are taking a new look at Egypt's pyramids to see if some of the blocks could have been made from concrete. Linn W. Hobbs, a materials science professor at Massachusetts Institute of ...

In new research on the Great Pyramids of Giza, a scientist says he has found more to their construction than cut natural limestone: Some original parts of the massive structures appear to be made of ...

In new research on the great pyramids of Giza, a scientist says he has found more to their construction than cut natural limestone: Some original parts of the massive structures appear to be made of ...

EVERY DAY on the outskirts of Cairo, thousands of tourists brave the dust and heat of the Egyptian desert to gaze upon the Great Pyramids of Giza. To say the pyramids are colossal does not even begin ...