Why do quaking aspen leaves quake and tremble? The leaves of this species quake, shake and tremble in the presence of even the slightest breeze due to the physical structure of the leaf stem ...

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

Quaking aspen (Populus tremuloides ... From May through June 2021, spongy moth caterpillars ate nearly every green leaf in ...

March 17, 2025 - STRONGSVILLE, OH — The U.S. Postal Service celebrates the colorful sights of autumnal walks with the release of five new Vibrant Leaves postcard stamps. Each stamp showcases a single ...

"I wanted to present a gradation of colors but with a variety of leaf shapes and trees." The aspen is often referred to as the "quaking aspen" because of the characteristic rustling sound that ...

The U.S. Postal Service celebrates the colorful sights of autumnal walks with the release of five new Vibrant Leaves postcard stamps. Each stamp showcases a single leaf from the aspen, sassafras, oak, ...