Why Do Dogs Sniff Each Other's Butts?

If dogs have such a keen sense of smell, why do they spend so much time with their noses near each other's rear ends? This video gives a quick introduction to dog butt science and explains why their noses aren't overwhelmed by the smell of poop. » 7/28/14 9:40am 7/28/14 9:40am

If you want to discourage fruit flies, hide your oranges

It seems like fruit flies will target any fruit that's lying around in your kitchen. But when given the choice, these annoying pests actually prefer citrus like oranges, limes, and lemons. And there's a good reason for it, too. » 12/05/13 11:29am 12/05/13 11:29am

Lab-Grown Smell Receptors Could Pave the Way for Artificial Noses

Anosmiacs, rejoice. MIT’s biological engineers, moving us ever closer to our transhuman future, have mass-produced lab-grown smell receptors — a breakthrough that will greatly increase their ability to study the way these proteins react to odor. Their goal is not only to unlock the secrets of olfaction, but also to… » 10/01/08 7:00am 10/01/08 7:00am