When sonar first picked up a massive, stair‑like object on the floor of the Baltic Sea, the image looked less like geology and more like a movie prop. The structure’s circular outline, sharp edges and ...

They were not, so the polemic went, the work of 'puny' man, but instead those 'giants of Mars'. Yes, the Pyramids of Giza - those monuments to god-like splendour that have stood for more than 4,000 ...