Ancient Greek sanctuary slowly sinks into the Aegean Sea

A brief boat ride from the thrumming nightclubs of Mykonos lies the UNESCO heritage site of Delos, one of the most important sanctuaries of the ancient Greek and Roman world.

Surrounded by piercing azure waters, Delos' 2,000-year-old buildings offer a microcosm of information on daily life during the Hellenistic and Roman periods.

But within decades, because of rising sea levels brought about by climate change, the site known for its temples guarded by stone lions could be gone forever, scientists warn.