Columbia subject headings:
Carbon dioxide emissions--Environmental aspects.
Climatic changes.
Energy consumption--Environmental aspects.
Global warming.
Greenhouse gases.
Harvard subject headings:
Carbon dioxide--Environmental aspects.
Climatic changes
Energy consumption--Environmental aspects
Global warming
Greenhouse gases
Princeton subject headings:
Carbon dioxide--Environmental aspects.
Climatic changes.
Energy consumption--Environmental aspects.
Energy policy--Economic aspects.
Energy policy--Environmental aspects.
Global warming.