Zip files are compressed archives containing documents, images, folders, basically any type of files on your computer. We create them to save space and make them more practical for sending via email or file sharing services.
Chernobyl 1986, year when what is believed to be the worst nuclear plant disaster in history happened. Almost 3 decades after this is how the wildlife in the so called inhabitable fallout zone looks like.
Adobe Photoshop always was on of the best (if not the best) image manipulation tools out there. It all started in 1987, when Thomas Knoll decided to create a program for Mac computers.
You don't need Photoshop or some other advanced piece of software to resize a large number of images at once. You can use Microsoft Office Picture Manager which is part of the Office suite.