Our species, Homo sapiens, are incredibly unique among the species on Earth today.
How do you move from one place to another? Well, most humans walk. Walking on two legs is a very human trait. Learn how the evolution of bipedal walking changed the course of our history.
Have you ever wondered how your cat, dog, bird, lizard, or fish is related to you? Animal bodies today are like living history books. They tell us a story that goes back at least 500 million years.
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