Andy May's Science

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.