Joseph Davidovits is a French materials scientist who has posited that the blocks of the Great Pyramid are not carved stone but mostly a form of limestone concrete. He holds the Chevalier de l’Ordre National du Mérite (one of France’s highest honors), is the author and co-author of more than 130 scientific papers and conferences reports, is the discoverer and inventor of the geopolymer chemistry and its technical applications and holds more than fifty patents. Joseph is a member of the Inte