3+ hour, 47+ min ago   (421+ words) Electrical surveys at a Neolithic cemetery in Brittany have found strong signs of buried stone clusters inside two huge barrows. Only excavation can show whether the mounds conceal rare human-shaped monuments. TRED30 and TRED31 are elongated earthen barrows between 50 and 80 metres long....

4+ day, 2+ hour ago   (448+ words) Prehistoric builders moved the enormous stones of the Devil’s Arrows at least 18 kilometres across Yorkshire, according to new research that identifies where the blocks came from. The finding connects Britain’s tallest surviving prehistoric stone row with Brimham Rocks, rather than…...

3+ week, 4+ day ago   (754+ words) NASA’s Curiosity rover has reached a stretch of Mars that looks almost manufactured. Across the floor of a valley called Valle Grande, the ground is broken into a broad field of honeycomb-like polygons. From a distance they resemble paving stones....