You may know someone who can’t tell the difference between specific colors — and there is a scientific reason it could be happening. The condition is known as color blindness. To share a better ...

Dr. Mark Lindsay was 5 years old when he first learned that tree trunks were brown. "Up until that point, I believed leaves and trunks were all green. Just lighter and darker shades," Mark said. Mark ...

Genetics plays a big role in color blindness. Find out why men are more at risk, and other factors that cause the condition. The human eye sees colors based on the wavelengths of the light radiating ...