Now, researchers have found the first evidence of changes taking place over the past 20 years in the shape of the inner core. Signs of the core’s deformation appeared in waves from earthquakes ...

Two-dimensional (2D) shapes are completely flat. They have two dimensions – length and width. A polygon is a closed 2D shape with straight sides that meet at vertices. Polygons can be regular or ...

Space can be a wondrous place, and we've got the pictures to prove it! Take a look at our favorite space pictures here, and if you're wondering what happened to today in space history don't miss ...

After hours: February 13 at 5:41:33 PM EST Loading Chart for SEE ...

Use the drop down menu to choose from the possible solids: Tetrahedron, Cube, Octahedron, Dodecahedron, Icosahedron, or "My Own Net." Manipulate set shapes in the workspace. Click and drag the shape ...