Here is the compelling description from the HGTV website:
The Blue Planet Globe is a dramatic rotating, illuminated globe that accurately depicts the seasons as they unfold around the world. Slowly spinning inside its sleek tinted case, it creates a mesmerizing view of Earth as seen from outer space. The mechanism design is based on an astronomically true formula and lets you see in 6-minute intervals the changing pattern of sunlight falling over each hemisphere during the year.
Now, as I watched the demo of the Blue Planet Globe in the lovely make-believe living room, I thought to myself that clearly I must have one of these, until I saw the $850 price tag! Now, for those of us with a more limited budget, The Science Source does have a much less expensive ($75) Season Modelling Globe which does the same thing but without the full smokey acrylic case.