Malta (S02E04)

The Mediterranean island of Malta and her sister island Gozo are home to some of the oldest sacred sites in the world. Built over 5,000 years ago, they were created by a sophisticated civilization known as the Temple Culture, which flourished for over a thousand years before vanishing. Now, a team of archaeologists and scientists are exploring these ancient sites to see if the Temple People may have left behind clues explaining their disappearance and what implications – if any – their collapse has on modern society. (Smithsonian Channel)