Voxels(referred to as 'blocks') are what makes up the game's structual Environment and allows for dynamic changes to one's game world. They can be removed or placed.
A series of voxels in a stack with a single voxel shaded.
A (smoothed) rendering of a data set of voxels for a macromolecule.
Voxels are what make up the triangle-like blocks in the mountains in this picture.