A special print edition of The Hitchhikers Guide to the Galaxy five-book trilogy is on the way. QR codes just aren’t cool any more, a least in restaurants. William A. Lavalette, an obscure 19th-century Black inventor, received two printing press-related patents. Louisville, Ky.’s American Printing House for the Blind museum expands and is reimaged as The Dot Experience. A biodegradable wedding dress made from the roots of wheatgrass. The first graphene-based kitchen appliance. A star in Ursa Major just went supernova. New research suggests that Saturn’s rings won’t last forever. CatVana is Carvana but for cats. Heinz has a new mixer for customized ketchup. All that and more in WhatTheyThink’s weekly miscellany.