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ChemistryThat’s a Wrap: Polymer coatings fortify pancreas cells
A technique that encapsulates cells in polymer might one day benefit people who receive pancreas-cell transplants for diabetes.
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AnthropologyAsian Trek: Fossil puts ancient humans in Far East
A 40,000-year-old partial human skeleton from a Chinese cave intensifies a debate over whether Stone Age people dispersing from Africa interbred with humanlike species that they encountered.
By Bruce Bower -
19815
This article “underscores the vast distances” humans moved from Africa to northern China in 20,000 years. However, if one stops to consider the time frames, it’s extremely unremarkable. At three generations every 100 years and roughly 6,000 miles from Africa to China, people would need to move only an average of 10 miles per generation.