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Summertime Science: Sunburn, Sweat, and Wrinkly Fingers
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5 조회 ㆍ 4년 전 업로드
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A summertime look at why we sweat, why we burn, and why our fingers wrinkle in the pool. Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More i...