Although the chemistry of autumn colours is well understood, there is an ongoing debate among scientists about why trees evolved their vivid autumn colours in the first place.

Autumn is known for its stunning display of orange and red hues, and this year the leaves could be more vibrant than ever. Sunnier summers have led to trees producing more sugar in their leaves, which ...

SEATTLE, Wash. — As autumn arrives, the vibrant colors of fall foliage captivate many, but the science behind this natural spectacle is equally fascinating. Scientists have long studied the changes in ...

I'm a city kid, who can often be unmoved by nature. But I am dazzled by autumn as it unfolds. I'm enthralled by how all the reds, tans, yellows and golds that paint the leaves that still stick to the ...