The first Arbor Day in the US was held in 1872. Since then, the event has really taken root. On the last Friday of April, people across the country mark the occasion by planting trees, often dedicating them to a loved one. It"s also a great day to celebrate trees themselves. As well as providing homes for countless species of animals, trees absorb carbon dioxide and clean the air we breathe. They also help to keep cities cooler and can even play a role in preventing floods.
Arbor Day
Today in History
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Penn Station
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Snow on the temple
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Yosemite National Park turns 132
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Ring of Brodgar, Orkney, Scotland
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Happy Father s Day
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Yellow-eyed penguins, Moeraki, New Zealand
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Tiny fliers head south
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Honoring our veterans
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Pandas pucker up for International Kissing Day
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A city of bridges
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National Panda Day
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A tale of almonds and bees
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This grizzly has Napping Day down
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The perfect canvas for an ancient text
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Spring equinox
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Noctilucent clouds
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SantaPark, Lapland, Finland
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Vale of Edale, Peak District, England
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A Festivus for the rest of us
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Winter solstice
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Make way for robots
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International Mountain Day
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Happy Holi!
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Ambassadors of the airwaves
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A. M. Foster Bridge in Cabot, Vermont
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A leafy seadragon in the waters off Wool Bay, Australia
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A Flag Day tradition
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Nazaré Lighthouse
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Barn owl, England
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A Portuguese fort takes a star turn