Science of the Seasons
As autumn arrives and the days get shorter, those of us in the north look forward to the seasonal color changes in the landscape. But what is it that causes the leaves to shift from their vibrant green?
The trees begin to prepare for winter by stopping the production of chlorophyll, the chemical compound that gives leaves their green color. When the chlorophyll fades, it reveals other pigments, like carotenoids, which were present all along and produce the yellow and orange hues we associate with a New England fall. At the same time, cool nights and sunny days trigger the production of anthocyanins, the compounds responsible for the red and purple colors. Interestingly enough, every tree has a signature color that its leaves change to! Maples go bold with scarlet red, while oaks stick to rich browns and russets.
For all those close enough to see this colorful display, make sure to grab some apple cider, take a walk through the forest, and enjoy the beauty of nature's farewell to the warm weather.
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