An estimated three million shipwrecks lay undiscovered. UNESCO is calling for a global treaty to protect them. Salvors say it is unrealistic and unworkable, despite developments in deep-sea exploration technology

Unesco is calling for a global treaty to prevent commercial interests from destroying shipwrecks found in international waters

Evidence of an earlier culture is found in the jungle surrounding Angkor

The greatest city of the Hellenistic age has been neglected by archaeology for decades. Now underwater survey techniques have provided us with glimpses of the centre’s greatness. But many decry the techniques being used

To dig or not to dig?

Astonishing science and technology show from Peking

Sculptor conservators Taylor Pearce are working on Windsor, Westminster Cathedral and Westminster Hall

New combination of techniques leads to important finds at ancient Italica

The art market at the touch of a button