| Phrase | Fact | Theory | Law | Hypothesis | Idea | Comments |
| Climate change | X | Climate has always changed | ||||
| Carbon dioxide is a greenhouse gas | X | Verifiable in the laboratory | ||||
| Man currently emits greenhouse gases at a higher rate than prior to the industrial age (roughly since 1840) | X | Observable and measurable | ||||
| Man-made climate change | X | Probably man has affected the climate through land-use changes and carbon dioxide emissions, but by how much is not known. | ||||
| Man-made climate change catastrophe | X | This speculative idea is unsupported by any data. |