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Do You Need a Brain To Sleep?

You might think you need a brain to sleep, but organisms with super simple neural networks can still "sleep" sort of like we do.

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When Culture Changes Our DNA

Thanks to our ability to develop and share complex learned behaviors across generations - a thing we sometimes call culture - we have become the ultimate niche builders.

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Life And Death 3,000,000 Years Ago

What was life and death like for some of our earliest ancestors, like famed australopith  Lucy, who lived almost three million years ago?

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