Add Yahoo as a preferred source to see more of our stories on Google. Millions of people every year make it a goal every fall to witness the beautiful changing of leaves. Timing is key, as see peak ...

Behind every autumn leaf lies a chemical shift-chlorophyll fading, carotenoids glowing, anthocyanins rising-that turns survival into spectacle. Every autumn, landscapes across much of the world ...

Every fall season, nature lovers look forward to scenic fall foliage. But do we know the science behind why leaves do this once the temperatures start dropping? Here's how nature creates art during ...