Globals consists of fields that do not belong to a particular section of the website but are used everywhere. They have their own area in the Control Panel under the "Globals" navigation item.
There are 2 globals on this website:
The Hero fallback images collection is used for the hero images of sections or entries which do not have a dedicated hero image. A random image will be chosen out of this collection to be used instead.
The Social media links are found in the footer of the website and can be edited here.