Are you ready to make some noise? It"s International Rock Day! Wait, not that sort of rock. On this day, we"re all about granite, limestone and slate. There are three types of rock: igneous are formed from solidified magma and lava; sedimentary rocks are layers of sedimentary particles such as sand; and metamorphic rocks are the result of heat and pressure on other kinds of rock.
International Rock Day
Today in History
More Desktop Wallpapers:
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Nimble and stealthy
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Abraham Lake, Alberta
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A group of Southern gemsbok in the savannah, Botswana
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A warm hug in the icy north
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Eastbourne Pier, East Sussex, England
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Like a waterfall, free and wild
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Black grouse males, Estonia
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This lake is no mirage
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Guanacos in Torres del Paine National Park, Chile
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Reddy for winter
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Taj Mahal, Agra, Uttar Pradesh, India
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May the 4th be with you
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Castilla-La Mancha, Spain
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Blooming sunflowers
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Plum-headed parakeet
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Happy Canada Day!
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Nuit Blanche Toronto
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African buffalo, Ngorongoro Crater, Tanzania
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Gaztelugatxe islet at sunset, Basque Country, Spain
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Clouds dance above Sundance
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Lupine fields, Snæfellsnes, Iceland
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World Childrens Day
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Eurasian otter and pup, Estonia
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Arenal Volcano, Costa Rica
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Almond trees in full bloom, California
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International Literacy Day
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If these walls could talk...
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Keel-billed toucan, Costa Rica
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Leshan Giant Buddha, Sichuan, China
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Dragons Eye, Uttakleiv Beach, Norway
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