人类进化史【英文精品】Human Evolution

Ardipithicus
4.4 million years ago
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Science Limits Itself to:
The physical evidence Possible theories that explain the patterns of physical evidence New improved theories as more physical evidence is found No theories that cannot be supported by physical evidence
Modern humans originated in Africa
There was one founding population It began 170,000 years ago They migrated to other parts of the world to replace other hominids
Geological Time & Human Development
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来自百度文库
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Homo Sapien
100-200,000 years old
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Mitochondrial DNA Dating
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Material found deepest is oldest
Material found is same age as other material in same layer
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Scientific Dating of Fossils
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Do the same laws of evolution apply to human beings?
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In a new book, documentary, and promotional Web site, paleontologist Jorn Hurum, who led the team that analyzed the 47-million-year-old fossil seen above, suggests Ida is a critical missinglink species in primate evolution. The fossil, he says, bridges the evolutionary split between higher primates such as monkeys, apes, and humans and their more distant relatives such as lemurs. "This is the first link to all humans," Hurum, of the Natural History Museum in Oslo, Norway, said in a statement. Ida represents "the closest thing we can get to a direct ancestor." OneWorldInsight.com
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Life Cycle of Stars
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Death of a Star
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Age of the Earth – 5 billion
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All life comes from the same sources…
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Five Principles of Evolution
Variation has a genetic origin due to mutation and recombination Natural selection and gene flow causes changes in gene frequency in populations Adaptation is genetically based and leads to changes in population over time Species formation evolves through reproductive isolation Genetic changes through natural selection lead to new species
Science
Premise 1 - All life forms on earth go through the process of evolution.
Premise 2 - Humanity is a life form on earth. Conclusion 3 - Therefore, there will be evidence of human evolution.
Human Evolution
“A Brief Overview”
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The Argument in Syllogisms
Western Religion
Premise 1 - God created humanity. Premise 2 - Humanity did not evolve. Conclusion 3 - Therefore, there will be no evidence of human evolution.
Carbon dating is proven accurate back to 50,000 years Uranium isotope dating is proven accurate back to 500,000 years Potassium to argon dating is proven accurate back to 5 billion years
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Homo Habilis
1.9 million years old
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Australopithecine Afarenis
3.2 million years old
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