Earliest Firemaking. It is difficult to detect the difference between using natural fire and anthropogenic fire from archaeology, but the difference for humans is great. Being able to cook food on demand, especially meat, is a big step forward in reliably improving digestibility and energy availability. This find pushes the evidence back to 400,000 years ago.
Indirect Measures of Racism and Discriminatory Outcomes. Direct reporting of what people say their attitudes are explains almost all of the variance. Unconscious bias is present but accounts for very little of the variance.
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