The science Behind Boobs - Human breasts are strange. They're one of the few organs that aren't completely developed at birth, our offspring rely almost totally on them, and while in most mammals the breast becomes enlarged exclusively during lactation, we are the only species on the planet to have continually swollen mammary glands. But why? The latest episode of Asap SCIENCE is here to explain why breasts are one of the best things to human to Homo sapiens... evolutionarily speaking.
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