1 Igneous Rocks: form by crystallizing melted material (magma). 2  They can form either on the surface (extrusive igneous rocks), or deep in the crust (intrusive or plutonic igneous rocks). 3  Volcanoes are places where magma erupts as lava or ash.
Swedish furniture manufacturer Ikea founder Ingvar Kamprad and late wife Margaretha at a local shop in Sweden.
Out of the Box. Large private companies aren't exclusive to the United States. Europe's most formidable include a Swedish furniture manufacturer (and doubtless the world's biggest popularizer of Allen wrenches), founded in 1943. With net shareholders' equity of $23 billion, IKEA has never strayed from its original business.