When it comes to identifying your pebbles, there are lots of reference books out there. But a lot of them only show pictures of outstanding, museum-quality specimens, which you’re unlikely to ...

Yashuv and Grosman, PLOS ONE, 2024 under CC-BY 4.0 When faced with an assortment of 12,000-year-old perforated pebbles from an archaeological site in northern Israel, researchers wondered if the ...