IVF example. July 14, 2016.. This file is from Pixabay, where the creator has released it explicitly under the license Creative Commons Zero (see here). File ID: 1514174
Creative Commons CC-Zero. This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
St. Patrick's Cathedral (Midtown Manhattan), New York City. May 28, 2017. Photograph by Mike Peel... This image is licensed under a Creative Commons Attribution-Share Alike licence, which gives you permission to freely use the image for any purpose, so long as you attribute it as requested here, and you must make any modified versions of it available under an identical license.