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Ever seen a horse pull its lips back to show its front teeth? Looks hilarious, right? Apparently, that's called flehmen response, and animals do it to sniff out chemicals -- something designer Susanna Hertrich think humans could benefit from. Since w...
via Engadget RSS Feed http://www.engadget.com/2015/01/29/air-pollution-detecting-helmet/?ncid=rss_truncated
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