The red pigments in some fall leaves have proven to be a puzzle for researchers who debate why leaves bother to go red.

Scientists might soon be able to forecast when the see is gonna turn red - and don’t worry, it has nothing to do with the apocalypse. For the first time, researchers identified nearly a dozen viruses ...

Chlorophyll breaks down, revealing the yellow pigment that was there all along. But red? Red is a different story altogether.