The New York Times·1 min read·medium
These Fossils May Be the Earliest Evidence of Handedness in Animals
✦AI Summary
Researchers have discovered fossils in South Australia that suggest animal handedness may have existed for over 500 million years. This finding indicates that the preference for using one side of the body over the other is a significantly older evolutionary trait than previously thought.
Are you right-handed? Roughly 90 percent of people are. But apparently the prevalence of righties is nothing even close to new: A batch of fossils from South Australia reveals that righties have had the upper hand for more than a half-billion years. ... [1972 chars]
science
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