Cookies are tiny text files that sit on your device when you visit websites. They're not programs and can't carry viruses. Most websites use them because they help the site remember things about your visit.
When you return to calenphoria.com, these files help us recognize your browser. That's how we can remember if you prefer certain settings or where you left off in our learning resources.
Some cookies disappear when you close your browser. Others stick around longer to remember you next time. We use both types, depending on what makes sense for different features on our site.