The U.S. Postal Service launched its Vibrant Leaves postcard stamps on March 17, 2025, celebrating the vivid hues of fall ...

The autumn garden can be as colourful as the summer one, but it’s not only the brilliance of flowering plants like rudbeckia ...

Every autumn we revel in the beauty of the fall colors. The mixture of red, purple, orange and yellow is the result of chemical processes that take place in the tree as the seasons change from summer ...

Whenever autumn arrives, whether in a blaze of brilliant leaves or with subtle changes in the life cycles of flora and fauna, the season holds a special beauty. Natural-science illustrations combine ...

But autumn means winter is on the way. And whilst we're having fun, trees have to get ready for the coming cold snap. Leaves trap sunlight to make food, in a process called photosynthesis.