New clears the contents of the current scene without changing system settings (viewport configuration, snap settings, Material Editor, background image, and so on). The New command also gives you the option, when you use it while a populated scene is active, to reuse objects from the current scene in the new one.
 (New), choose
 (New), choose  
  Application menu
 Application menu  New, or press Ctrl+N.
 New, or press Ctrl+N. 
               
The New Scene dialog has the following controls:
Keeps the objects and the hierarchical links between them, but removes any animation keys.