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The Worst of the Pandemic Is Truly Behind Us (

This week, the United States will have passed an important milestone in the covid-19 pandemic: 100 million vaccine doses administered in the country, with over 60 million Americans having gotten one or more doses of the vaccines developed by Moderna, Pfizer/BioNTech, and Johnson & Johnson.

What fueled humans' big brains? Controversial paper proposes new hypothesis. (

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