Antidepressant clips on Instagram: "fascinating discovery by photographer Mathieu Stern, who found 120-year-old glass plate negatives in a time capsule, revealing vintage cat photos from around 1900, highlighting the enduring popularity of cats in photography and media. - The process shown involves developing these historical negatives using the cyanotype method, a technique from the 19th century that uses iron salts reacting to UV light, which not only preserves the images but also connects mod