Ugh: malware can hide in images. What are the most trusted brands in the US? Do we really need billboards in space? Graphene-enhanced “smart concrete.” Clever spring clip pin is a thumbtack without the tack bit. China’s “incense clocks.” David Mills, the Internet’s “Father Time,” is retiring. Wax worm saliva can readily degrade plastic. The James Webb Space Telescope takes a close look at Mars. Hidden Valley’s “Ranch Home Collection,” for some reason. All that and more in WhatTheyThink’s weekly miscellany.