Add Yahoo as a preferred source to see more of our stories on Google. By spring, the leaves on trees grow and assume the color green, and by autumn, they change to sometimes brilliantly warm colors ...

The physical signs of fall begin when the leaves change color and start to fall from the trees. This transformation is triggered by shorter daylight hours and cooler temperatures. The process of ...

Autumn's vibrant leaf colours are a result of intricate biochemical processes, not mere decay. As chlorophyll breaks down, ...

Scientists have long questioned whether the vibrant colors of fall foliage serve an evolutionary purpose. One theory suggests red pigments protect leaves from sun damage, allowing trees to absorb more ...

We are soon approaching the time of year with shorter days, longer nights and cooler temperatures; when these changes occur, the vibrant green leaves on trees begin to slowly change to reds, yellows, ...

A patch of bright red here, a little light yellow there and a smidge of orange around. Leaves are starting to change color in Pennsylvania but most aren't quite ready for their full show yet. Peak ...

Leaves changing colors is one of the most iconic parts of autumn in the United States, and there's still time to catch stunning fall foliage before trees become totally bare leading into winter. But ...

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 ...