Makeluno

We are also believed to be the only animal that feels embarrassment—a complicated emotion requiring understanding others' opinions and other factors. Charles Darwin called blushing "the most peculiar and most human of all expressions," while Mark Twain said, "Man is the only animal that blushes. Or needs to."

This might explain why airplane food gets such a bad reputation. The elevation in an airplane can have a detrimental effect on our ability to taste things. According to a 2010 study conducted by Germany's Fraunhofer Institute for Building Physics, the dryness experienced at a high elevation as well as low pressure reduces the sensitivity of a person's taste buds to sweet and salty foods by about 30 percent. Add that dry cabin air affects our ability to smell, and our ability to taste is reduced further.