To remember the 4 recognized Global Commons, use the acronym AAOS :
1. A tmosphere (governed via UNFCCC Paris Agreement)
2. A ntarctica (governed via Antarctic Treaty of 1959)
3. O cean Floor High Seas (governed via UNCLOS 1982)
4. S pace Outer Space (governed via Outer Space Treaty 1967)
*Key Rule:* None of these four domains belong to any individual country; they belong to all of humanity!