claim: The consequences of climate change become increasingly bad after each additional degree of warming, with the consequences of 2°C being quite damaging and the consequences of 4°C being potentially catastrophic.
evidence: Regrettably, this creates the impression that scientific opinion is evenly divided or completely unsettled" Begley 2007: "polls found that 64 percent of Americans thought there was 'a lot' of scientific disagreement on climate change; only one third thought planetary warming was "mainly caused by things people do."