Columbia subject headings:
Climatic changes--Social aspects--United States.
Natural resources--Social aspects--United States.
United States--Civilization--21st century--Forecasting.
Harvard subject headings:
Climatic changes--Social aspects--United States.
Natural resources--Social aspects--United States.
United States--Civilization--21st century--Forecasting.
Princeton subject headings:
Climatic changes--Social aspects--United States.
Natural resources--Social aspects--United States.
United States--Civilization--21st century--Forecasting.