A scientist probes the origins of 'ouch!'

Skinning a knee, swallowing habanero salsa, and installing snow chains bare-handed might seem pretty different at first. But all have one thing in common -- they're guaranteed to hurt.

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<p><a href="http://www.physorg.com/news165766405.html">A scientist probes the origins of 'ouch!'</a></p> <p>Skinning a knee, swallowing habanero salsa, and installing snow chains bare-handed might seem pretty different at first. But all have one thing in common -- they're guaranteed to hurt. </p>