贴贴专栏下的单词表，来源国家地理。

Learn more about touch. Videos available.

Positive touch is vital for healthy function and beneficial for the immune system.

As scientists help an industrial worker regain his sense of touch through a prosthetic arm, we learn about the mechanics of human touch and why it’s so essential to our lives.

It's the first sensation we feel, our most primal connection to others. Can implants and electrical signaling replicate the experience of touch? Research teams are exploring the possibilities—with startling results.

Gentle touch is vital for us humans. It creates the first contact with the world for newborns, giving us a sense of security and belonging. Touch influences our immune system, and on our feelings for our fellow human beings.

原标题：The Brave Ones

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