Radar experts are casting doubt on claims that King Tutankhamun's tomb contains hidden, undiscovered chambers — and they're calling for more data to be released. At a March 17 newsconference, officials at Egypt's antiquities ministry released radar data that they said showed the presence of hidden cavities inside the tomb of King Tut. The scans, carried out by Japanese radar technologist Hirokatsu Watanabe, "suggest the presence of two empty spaces or cavities beyond the decorated North and West walls of the burial chamber," they said in a statement. The scans also suggest the "presence of metallic and organic substances," and...