ScienceAlert on MSN3d
Earliest Known 3D Map Found in Prehistoric French Cavern, Say Experts
In the cramped confines of a small cavern to the south of Paris, scientists have 'read between the lines' on the floor and ...
Hackaday5mon
Solar Fountain Aerates Garden Pond
That’s what led [TomGoff] to build his own solar pond fountain ... tube for flotation. A 3D printed nozzle in the center of this apparatus is attached to a 12 V water pump and the whole thing ...