Autumn heralds the arrival of cooler weather, shorter days and colorful scenes across the United States as trees start to prepare for the colder months ahead. The vibrant foliage can be credited to ...

Do you ever wonder why leaves change in the fall and what determines the colors that they change to? It's kind of like swapping out your summer T shirt for *** snazzy winter coat. They're really ...

Since leaves are a key way that trees lose moisture, shedding some of them cuts down on the evaporation loss and maximizes the use of what little moisture is left in the ground for the remaining top ...

A flowering dogwood’s leaves turning in early October of 2025 at the Pennypack Ecological Trust Preserve in Montgomery County, Pa. (Kimberly Paynter/WHYY) This story is part of the WHYY News Climate ...

As the long, warm days of summer transition to a darker, cooler winter, leaves across much of the country put on a dazzling display of colors. And as it turns out, the oranges, reds, browns and ...