We know it's not good for us, but why are we so addicted to processed foods? Part of it is related to convenience, but perhaps the real reason is because processed foods taste good -- that is, if you like a lot of sugar, salt, and fat. As much as we would like to not think about it, a lot of science (and money for research, development, and marketing) goes into designing the perfect-tasting junk food that will have people coming back for more. Here are a few examples of how science is being used to trick our taste buds.
If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post