New research suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for photosynthesis.

Here are a few of the more common meanings of the color purple, according to Morris and Leno. Leno says purple embodies a sense of adventure and reflects an upbeat energy. This can also spill into the ...

Traditionally, blue is associated with masculinity and pink is associated with femininity. Blue may represent boyhood or be ...

James Wade of MedievalMadness took a vivid look at how certain colors were perceived during the Middle Ages, particularly ...

Dragon Ball DAIMA finally introduced Super Saiyan 4 form, only to quickly confirm that this form isn't linked to God Ki from ...