February is Black History Month and it pays tribute to the achievements of African Americans throughout U.S. history. It has ...

Where does black fall on the color spectrum? – Utsav, age 17, Navi Mumbai, Maharashtra, India People love the rainbow of ...

green, blue, indigo, and violet. A red object looks red because it reflects the red wavelength of light, and the same is true for all other colors. There is no such thing as “black light wavelength,” ...

Unusual colors, such as green, may not signal a health issue. Stool color may vary briefly and then return to its regular shade. White, red, or back to black after the first few days are the ...