Inside the extraordinary nose of a search-and-rescue dog

Why can a dog catch a scent from a mile away while humans track smells closer to home? On the second episode of ScienceScope, we dive into the smell behaviors that unite and divide animals...

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Meet Zinka, the rescue dog.Dogs are relentless smellers.Their noses can catch a scent from a mile away......five times farther than we can.These pooches can follow a smell for hundreds of mileswhich allows them to save lost peopleor catch bad guys.There are millions of reasons whythe canine sense of smell is better than oursand we're going to tackle all of them in the next three minutes.Ready! Set! Sniff!Let's start by hopping inside a dog's noseWeeee!One key to a canine’s super snoutis its long and intricate nasal cavity.It's like a little cathedral inside your nose full of these bones.Allow me to introduce Lucia Jacobs.She’s a neuroscientist at the University of California Berkeley,and she’s absolutely obsessed with how dog noses ...