If you look at the universe and study the universe, what you find is that there is no evidence that we need anything other than the laws of physics and the other laws of science to explain everything we see. There's absolutely no evidence that we need any supernatural hand of god. -- Lawrence Krauss, World-Renowned Physicist
There is probably no other notion in any field of science that has been as extensively tested and as thoroughly corroborated as the evolutionary origin of living organisms. -- Encyclopedia Britannica
FAITH. No one word personifies the absolute worst and most wicked properties of religion better than that. Faith is mind-rot. It’s the poison that destroys critical thinking, undermines evidence, and leads people into lives dedicated to absurdity. It’s a parasite regarded as a virtue. -- PZ Myers
Religion is the antithesis of science, an anesthetic for the mind that disables critical thought and encourages the acceptance of inanity as fact, and wishful thinking as evidence. -- PZ Myers

Sunday, February 13, 2011

The ancestors of modern human apes could walk upright three million years ago.

As everyone who isn't an uneducated moron knows, we share an ancestor with the modern chimpanzee apes. Our common ancestor split into two lineages about six million years ago. One lineage evolved to become modern chimpanzee apes and modern bonobo apes. The other lineage developed into modern human apes (and a few other human-like species that went extinct).

What's interesting is the lineage that developed into chimps evolved just as much as we did. They just evolved differently to be able to survive in their different environment which was living in trees. The environment of our ancestors was not in the forest. Any mutation that helped us survive better in that environment was selected for (creatures who had what it took to survive passed their genes on to the next generation). The changes were gradual. For example the fossil evidence shows a gradual increase in brain size.

Several features developed in our ancestors to make walking upright possible, which was very helpful in our treeless environment where it was necessary to run fast to hunt for food. We were predator apes and that's how we survived.

A three million years old fossilized foot bone shows that our ancestors had arches in their feet which is evidence they could walk upright that long ago. The ancestors of chimpanzees were better off with more flexible feet to climb trees, so that feature was selected for. This is an example of how both lineages evolved in different ways to adapt to different environments.

This is just one of countless examples of how interesting the history of life is. The evolution deniers don't know what they're missing because they're too busy praising their dead Jeebus and flying airplanes into buildings.

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