To see the stereo effect, please gaze at infinity at a point between the two images. You should eventually see three images. The middle image will be a combination of the left and right images and it should look solid (stereo or 3d). The effect can sometimes be improved by holding a sheet of paper or card perpendicular to the image pair so that your left eye only sees the left image and your right eye only sees the right image. To focus, move your head closer to or further from the image. It might take a few tries to achieve the effect.
Buckminsterfullerene or Buckyball C60. The carbon atoms are shown as grey spheres at their covalent radius (i.e. just touching).
Buckminsterfullerene is a form (allotrope) of carbon. In this molecule, there are sixty carbon atoms arranged in a sphere (actually at the vertices of a truncated icosahedron). Fullerenes have rather exotic properties and these hollow balls of carbon atoms are likely to have many uses.