Systema ideale quo exprimitur, aquarum per canales hydragogos subterraneos ex mari et in montium hydrophylacia… https://www.rawpixel.com/image/8906663/image-clouds-art-vintageFree Image from public domain licenseEarth, plate one from The Four Elements by Jan van de Velde, II https://www.rawpixel.com/image/8979313/earth-plate-one-from-the-four-elements-jan-van-veldeFree Image from public domain licenseOmnia Vincit Amor, or The Power of Love in the Three Elements by Benjamin West https://www.rawpixel.com/image/9084470/omnia-vincit-amor-the-power-love-the-three-elements-benjamin-westFree Image from public domain licenseCAPE CANAVERAL, Fla. – On Launch Pad 17-B at Cape Canaveral Air Force Station in Florida, United Launch Alliance's Delta II… https://www.rawpixel.com/image/8718182/photo-image-cloud-smoke-fireFree Image from public domain licenseA Huntsman with a Dead Hare and a Dog (Study for "Terra") by Jacob de Gheyn, II https://www.rawpixel.com/image/9047230/huntsman-with-dead-hare-and-dog-study-for-terra-jacob-gheynFree Image from public domain licenseLandscape with Allegories of the Four Elements by Jan Brueghel the Younger and Frans Francken the Younger https://www.rawpixel.com/image/14263210/image-background-cat-faceFree Image from public domain license