{"by":"PaulHoule","descendants":23,"id":48139435,"kids":[48167004,48166365,48167391,48139817,48166733,48166971,48169050],"score":36,"time":1778784209,"title":"Why did Clovis toolmakers choose difficult quartz crystal?","type":"story","url":"https://phys.org/news/2026-04-clovis-toolmakers-difficult-quartz-crystal.html"}