You get what you pay for--a dog's nose has 2 billion odor receptors, 40 times as many as a human's--but there are limits to what even the military is willing to spend on an animal.

FORBES: A Nose For Bombs

Gillette Odor Shield products will be the lone advertiser on what Rodale executives are calling the "preview issue" of Men's Health for the iPad.

WSJ: Advertisers Gather Around as Publishers Tout Bells and Whistles of Apple's iPad

What really blew people away, Snyder says, was the huge number of genes dedicated to odor detection.

FORBES: The Secrets of Scent