Scientists have proven the arch running across the top of the human foot evolved in a 3.5-million-year old human ancestor, enabling us to walk and run upright unlike all other primates.
Mysterious 300,000-year-old skull could be new species of human, researchers say - National
History of Life on Earth, Overview & Timeline - Lesson
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World Studies: Chapter 01
The Lab-Leak Theory: Inside the Fight to Uncover COVID-19's Origins
古生物新闻（2020年2月17日-3月1日） - 知乎
Why Would a Scientist Inject Himself with 3.5 Million Year Old Bacteria? What was this scientist thinking when he injected himself with a 3.5 million years old bacteria from Siberian mountains?
A Cranium Discovered by Cleveland Researchers Puts a Face on an Ancient Human Ancestor
Fossil - Wikipedia
How Scientists Discovered the Staggering Complexity of Human Evolution
