claim: Although it has some very important and beneficial effects, CO2 meets the legal and encyclopedic definitions of a pollutant, and human CO2 emissions pose a threat to public health and welfare.
evidence: It is anticipated that continuing changes to the climate will have serious negative impacts on public, animal and ecosystem health due to extreme weather events, changing disease transmission dynamics, emerging and re-emerging diseases, and alterations to habitat and ecological systems that are essential to wildlife conservation.