Classic round-point shovels dig holes better than any other, while the key to transplanting shrubs cleanly and efficiently is a more narrow-bladed shovel. If you need to dig a trench, spread gravel, ...
Researchers have created microscale robots less than 1 millimeter in size that are printed as a 2D hexagonal 'metasheet' but, with a jolt of electricity, morph into preprogrammed 3D shapes and crawl.
From the gracefully curved almond shapes to the bold, sharp edges of square nails, each nail shape tells its own story about your character and how you approach life. Intrigued?