This Tuesday, April 22, is Earth Day. To mark the occasion, Beth Klosterboer made a spherical cake. She used 2 hemispheric pans to form the body of the cake, then hollowed out the core. She frosted blue icing around the outside and then filled the core with rock candy. After assembling the components, she then used green frosting to show the continents.
It's not only beautiful, but a masterpiece of cake craftsmanship. You can see step-by-step photos of her build process here.