When the Bronze Age hit ancient Israel, the copper-rich region was able to quickly source seven of the eight ingredients needed to produce the alloy at Timna and other mines. But where tin -- another one-eighth of the metal's recipe -- came from has been a lingering mystery for scholars. A new paper from an international team of researchers proposes a surprisingly faraway source -- Cornwall. In a paper published in June on the open-access, peer-reviewed scientific journal PLOS One, the authors analyze 27 tin ingots, or blocks, from five sites bordering the eastern Mediterranean Sea. For decades, researchers have...