Another COVID-19 reinfection: This time second infection was more severe
https://arstechnica.com/science/2020/08/another-covid-19-reinfection-this-time-second-infection-was-more-severe/
The Archaeology News Network: 350,000-year stone found in Israel is oldest-known...
The Archaeology News Network: 350,000-year stone found in Israel is oldest-known... : Archaeologists in Israel have discovered a 350,000-year-old stone tool likely used to grind food and other materials at least 50,000 years b...
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