How do you edit world nodes in Blender?

To edit world nodes in Blender, you need to switch the Node Editor context from "Object" to "World."

Here's how to do it:

1. Open the Node Editor: If it's not already open, go to the top of the Blender window and choose the "Shading" workspace, or create a new window and change its type to "Node Editor."
2. Change the Context: In the Node Editor's header (the top bar), you'll see a dropdown menu that probably says "Object." Click on this dropdown.
3. Select "World": From the dropdown menu, choose "World."

Now, the Node Editor will display the nodes related to the world settings, allowing you to edit the background color, environment texture, and other world-related properties. You can then use the "Add" menu (or Shift+A) within the Node Editor to add and connect various nodes to create your desired world effect.