Global Warming - Is it too late?
There are four main opinions on the subject of global warming:
1) It’s not happening.
OR
2) It’s happening but has causes other than anthropogenic increases in the atmospheric carbon dioxide content, for instance the precession of the nodes of the earth’s orbit and cyclical variations in the sun’s radiation.
OR
3) It is caused mainly by anthropogenic carbon dioxide emissions and we can and must reduce these emissions in time to arrest the increase in atmospheric carbon dioxide content and start to bring that content back to historical levels.
OR






















