“How can we be sure that people see the same color when they look at something?” – Henrietta, age 12, Market Harborough, UK In fact, we can’t be so sure that we do all see the same colors. What colors ...

Have you ever wondered why chicken eggs can be different colors? While most eggs are white or brown, they also come in colors like cream, pink, blue and green. In addition — and this is no “yolk” — ...

C. diff infection can cause diarrhea. While it may lead your poop to change color, there are no specific colors that are definitive evidence of having C. diff. According to the Centers for Disease ...

If you eat chicken eggs, you probably have a shell color preference for reasons you can’t explain. Some people only buy brown eggs because they believe they’re “healthier” or more “natural” than white ...