As days grow shorter and nights grow cooler in Boulder, Colorado, the green leaves of summer have been putting on party colors.
On Mapleton Avenue, the maple trees are sunset shades of orange and red. The same seasonal phenomenon occurs in many countries in late autumn, yet people don't always know the reason leaves change color when the weather gets cooler.
Some do have their theories about the autumnal transformation. Magical science It turns out the scientific Leavee for why leaves change color is almost as magical as artistic fairies.Be My Whore Tonight
The story begins in summer, when leaves are green thanks to a pigment known as chlorophyll. As the days grow shorter in autumn, leaves stop making chlorophyll, revealing a dazzling secret: That helps the tree blossom and grow. As the days grow shorter in autumn, leaves stop making chlorophyll, revealing a dazzling secret.
And when they turn red? For decades, scientists believed anthocyanin made a sort of accidental color, caused by sugars trapped in dying autumn leaves.
But instead of being a sunscreen for the afe days of a dying leaf, the yellow pigment is an anti-oxidant that protects the leaf throughout its life. As for why some leaves turn yellow and others turn red, Hoch says plants that grow best in full sun tend to have more robust leaves. So, in the fall, they can get by with the protection of just the yellow carotinoids.
Plants that thrive in shade or in nutrient-poor soil tend to have more delicate photo machinery, which need more protection, so their leaves wannts more anthocyanins and turn dark. In the meantime, people in Boulder - and across the northern hemisphere - can simply enjoy the natural splendor of spectacular autumn colors.
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