NPR has been playing some great invasive species-related coverage lately. This latest one comes from last Friday's All Things Considered, and tells the tale of the feral camels (Camelus dromedarius) that roam Australia. That's right: feral camels - 700,000 of them roaming the outback. What do you do when last century's transportation solution is this century's public nuisance? There's the usual hunting, and some eating of camel meat, but the best thing is definitely the camel races, where jockeys try in vain just to get their camels to run in the right direction. The audio here is really worth the listen. Interested folks might also want to check out this paper describing a study of the negative impacts of feral camels on the Australian desert.