To change where the menu appears change the left and top values of the divCont in the stylesheets, it's currently placed relative so you can place this menu in tables or similar if you want. Change the text colors and size in the A.clMain and A.clSubb classes.
Scientists agree that the Earth's core is composed primarily of iron.
But they have also long known that the density of this core is about 10 percent less than the density of pure iron at core temperatures and pressures. Therefore, Earth's core must have some additional, less-dense component or components. But there has been no definitive identification of that lighter component. The most significant recent insight into this question results from laboratory experiments using materials at very high pressures and temperatures. To conduct their research, Fei and Mao used a new version of the diamond-anvil cell, an instrument in which tiny samples are mechanically squeezed between two facing diamonds.