An Elephant's Sense of Smell May Be Better Than Yours

Next time you’re deciding whether to throw out some questionable produce, you might want to turn to an elephant. That’s because the lumbering pachyderms turn out to have more genes coding for olfactory receptors (which detect smells) than any other known mammal — more than twice that found in dogs, and almost five times more than humans. Sorry, Fido, you’ve been genetically outsmelled.

Genomic Junk in the Trunk
The researchers started out studying the OR repertoire (as they call the co

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