From Yahoo News:
She proceeded to photograph the Happy Meal each week and posted the pictures to...record the results of her experiment. Now, just over six months later, the Happy Meal has yet to even grow mold. She told the Daily Mail that "the food is plastic to the touch and has an acrylic sheen to it."
Read this article in full before your next trip to McDonalds.
Now, I am not anti-McDonald's, I ate there probably weekly growing up and I was quite thin. The company donates millions to good charities, and the Ronald McDonald House for sick children is a wonderful organization. They have every right to not just be in business, but to be wildly successful too. The food is cheap, and there are plenty of exceptional, loving, and intelligent parents who feed their kids McDonald's. However, this is just a public service announcement...do you know what you are putting in yours and your children's bodies? Shouldn't natural food spoil over a short time, especially without refrigeration? At least that's what I remember from Science class and studying Louis Pastuer in school.