Here is a list of the ten most populous countries estimated for year 2050:

1. India - 1,628,000,000 (1.628 billion)
2. China - 1,437,000,000 (1.437 billion)
3. United States - 420,000,000 (420 million)
4. Nigeria - 299,000,000
5. Pakistan - 295,000,000
6. Indonesia - 285,000,000
7. Brazil - 260,000,000
8. Bangladesh - 231,000,000
9. Democratic Republic of Congo - 183,000,000
10. Ethiopia - 145,000,000

The Protocols of the Learned Elders of Kyoto exempt all of these countries except one. Can you guess which one? Take all the time you need. This is a no-grade class.