Nature Podcast

00:48 The mystery of Stonehenge’s Altar StoneStonehenge’s central stone came from Northern Scotland, more than 600 miles away from the monument, according to a new analysis of its geochemistry. It is commonly accepted that many of the rocks that make up the iconic neolithic monument came from Wales, 150 miles from the site. Previously, it had been thought that a central stone, called the Altar Stone, had also come from this area, known as the Preseli Hills. The new work suggests that the ancient Britons went much further, perhaps ferrying the Altar Stone hundreds of miles, to place the rock at the centre of Stonehenge.Research Article: Clarke et al.News: Stonehenge’s massive slabs came from as far as Scotland — 800 kilometres away12:12 Research HighlightsHow a parasite could help scientists break through the blood-brain barrier, and the physics of skateboard moves.Research Highlight: Engineered brain parasite ferries useful proteins into neuronsResearch Highlight: How expert skateboarders use physics on the h