“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 ...

Earth has famously been described as a "pale blue dot," but far in the past, the planet might have had an entirely different ...

Add Yahoo as a preferred source to see more of our stories on Google. Crater Lake in Oregon looks brilliant blue because its water comes from melting snow and is extremely pure. CST Tami Beduhn, NOAA ...

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” — ...

There are thousands of species of birds and with great numbers come great biodiversity. There are thousands of species of birds and with great numbers come great biodiversity. Birds are among the most ...

People with heterochromia have a striking and unique appearance. Are you among them? “Heterochromia is when a person’s irises are different colors,” explains Sidney Gicheru, MD, the medical director ...

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 ...