INFO:

地球上の一握りの種には、一見、不可解な特性「月経周期」があります。私たち人間は選ばれた少数の哺乳類であり、月経によって栄養を余分に消耗し、身体に負担がかかるにも関わらず、人間には他の動物よりも多く月経周期が来ます。この稀な生物学的過程のどこに意味があるのでしょうか？　TED-Edが月経の歴史と進化について説明します。 講師：TED-Ed 、アニメーション：TED-Ed ＊このビデオの教材：http://ed.ted.com/lessons/why-do-women-have-periods

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TED-Ed: なぜ、女性には生理があるの？ | TED Talk

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