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Laser scan for Stonehenge secrets

Stonehenge is being scanned using modern laser technology to search for hidden clues about how and why it was built.

All visible faces of the standing and fallen stones, many of which are obscured by lichen, will be surveyed.

Some ancient carvings have previously been found on the stones, including a famous Neolithic "dagger".

The survey is already in progress and is expected to finish by the end of March.

Beer Lubricated the Rise of Civilization, Study Suggests

Could beer have helped lead to the rise of civilization? It's a possibility, some archaeologists say.

Their argument is that Stone Age farmers were domesticating cereals not so much to fill their stomachs but to lighten their heads, by turning the grains into beer. That has been their take for more than 50 years, and now one archaeologist says the evidence is getting stronger.