The ancient Egyptians did not have any science in the modern sense. Though they had some knowledge of mathematics and chemistry, their technical talents really lay in building on an enormous scale. Some of their achievements in this field would still pose problems for us even today, and sometimes we still do not know quite how they went about things. But we do know how they carved out the great obelisks like Cleopatra's Needle and set them up miles away from their quarries, using only the simplest of resources and a lot of ingenuity. Introduced by Cyril Aldred from the Tutankhamun Exhibition at the British Museum.