The scientific process behind many of life’s workaday phenomena is something called capillary action, which is the molecular attraction that makes liquid flow through a porous medium, for those in need of a high-school refresher. It’s what makes tears flow through your lachrymal ducts, what gives micro-fiber its super-absorbent properties, and why groundwater naturally spreads into areas of dry soil. It’s also what powers the Ink Calendar by Oscar Diaz.