The burliest lumberjack with the best-oiled chainsaw couldn"t slice the massive "timbers" found in Petrified Forest National Park in northeastern Arizona. So why are these giant stone logs segmented in such symmetrical rounds, as if they"re ready to be split into firewood?
Petrified Forest National Park
Today in History
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Penguins can t fly!
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Yellow-eyed penguins, Moeraki, New Zealand
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Maritime forest in Cumberland Island National Seashore, Georgia
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A whale of a picture
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Red deer stag in Glen Affric, Scottish Highlands
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Oh, to sleep under the northern lights
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Bryce Canyon National Park, Utah
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Discovery Day in Yukon, Canada
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Dog days of summer
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Crimson-rumped toucanet in the Refugio Paz de Las Aves, Ecuador
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International Day for the Conservation of the Mangrove Ecosystem
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A showcase for future fame
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Stepping into autumn
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Fire-damaged forest near Wolf Creek Pass, Colorado
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And to think that I saw it in Cappadocia
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It s Computer Science Education Week
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World Meteorological Day
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International Day of Light
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World Otter Day
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Don t go chasing waterfalls
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Seasonal lights dazzle in Japan
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Beethoven s 250th
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Ravens
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Arenal Volcano, Costa Rica
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International Day for Monuments and Sites
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Glacier cave in Iceland
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Wyoming celebrates its statehood
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Aqueduct, Arkadia Park, Poland
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Palace of Westminster, London, England
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Big Bend National Park in Texas turns 81
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