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I've lived in malarial countries for well over a decade, so malaria is on my mind. I check the kids' room twice before going to bed to make sure no mosquitos are in there. But this thing isn't great. A bubbler that you have to put in each and every source of still water? Why not dump out the water? How many would you need? Maybe if you have a water fountain or something, but in most of the malarial south, this wouldn't quite do it.

Scientists posit malaria is the single strongest evolutionary force on the human genome at the moment. After nearly nine years in West Africa, I'm convinced it's true.