Human olfactory abilities are far greater than we realize, says a recent study at UC-Berkeley. Blindfolded and with covered ears, participants in the study crawled through the grass, using only their nose to guide them on a chocolate-scented trail. Most participants were able to find the 30-foot trail and follow it as it turned. The study found also that smelling occurs in stereo: covering one nostril was found to greatly reduce the participants’ ability to follow the trail. More about the study can be seen at The Ledger
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