At least they still have hydrant urination to fall back on.

Can humans track smells as well as dogs? You wouldn't think so, but a recent study has shown that we might have similar abilities in this regard. As least in tracking a chocolate scent. Basically, the researchers at UC Berkeley found that 2/3 of undergraduates (interestingly enough, slightly more men than women -- but this may not be statistically relevant) were able to follow a ~10 meter chocolate scent trail in a field. The back-and-forth motion followed, as shown in the picture, is comparable to a hunting dog's path in tracking prey.

Amusing to me, the picture of the guy on his honches was the cover to the most recent Nature Neuroscience journal.

And, because I haven't been able to figure out how exactly to post videos to the blog, here's a link to the the methodology.