I quickly set up a hardscape-only aquarium using a dead pinus sylvestris bonsai, some petrified wood and sand. It is primarily for testing if (and how) such a setup can be kept clean. These look super-simple, but I am afraid they are not :) We’ll.
We've always wanted to build origami shapes, but it looked too hard to learn. Turns out we were wrong, we found these awesome origami tutorials that would allow any beginner to start building origami shapes.
Mound in Chryse Planitia, Mars. An anaglyph (viewable in using red-blue glasses) made from a pair of images acquired by the HiRISE instrument aboard the Mars Reconnaissance Orbiter. The structure shown is about a kilometer across.