The hieroglyphs that have been found by a small robot named Djedi last month in Egypt's Great Pyramid of Giza are just numbers, according to a mathematical analysis.

A group of Egyptian researchers claims to have determined the exact date for the construction of Khufu's pyramid. The team, led by Dr. Abdel-Halim Nureddin, says work on the pyramid was started on 23 August, 2470 BC. Nureddin said the team had proved the date using "historical facts and astronomical calculations."

Many of Egypt's most famous monuments contain hundreds of thousands of marine fossils, most of which are fully intact and preserved in the walls of the structures, according to a new study. The study's authors suggest that the stones that make up the examined monuments at Giza plateau, Fayum and Abydos must have been carved out of natural stone since they reveal what chunks of the sea floor must have looked like over 4,000 years ago, when the buildings were erected.

Linn W. Hobbs, professor of materials science at Massachusetts Institute of Technology is carrying out experiments with crushed limestone and natural binding chemicals - stuff that would have been readily available to ancient Egyptians - designed to show that blocks on the upper reaches of the pyramids may have been cast in place from a slurry poured into wooden molds.