Are you ready to make some noise? It"s International Rock Day! Wait, not that sort of rock. Today, 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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Least chipmunk, Kootenai National Forest, Montana, United States
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Spotted eagle rays
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Grasmere, Lake District, Cumbria, England
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Keel-billed toucan, Costa Rica
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A puzzle for giants
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Hay Festival
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Happy St Patricks Day!
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World Environment Day
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Mont-Saint-Michel, Normandy, France
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Oktoberfest, Munich, Germany
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Meet for lunch?
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Mid-Autumn Festival
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International Museum Day
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Taj Mahal, Agra, Uttar Pradesh, India
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International Beaver Day
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Aýna, Albacete, Spain
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Castle Stalker, Argyll, Scotland
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Glastonbury Festival begins
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International Jazz Day
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Tibetan New Year
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Dusky eagle-owls, Pakistan
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International Sloth Day
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World Art Day
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Southern tip of a northern isle
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Winter solstice
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World Migratory Bird Day
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Sandhill cranes, Bosque del Apache National Wildlife Refuge, New Mexico, USA
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History in the making
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Guy Fawkes Night
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Taking the long view
Bing Wallpaper Gallery

