Cass Sunstein thinks there’s bias in the Trump EPA in the way the agency handles CO2.  He’s right, but not in the way he thinks.

The only way to solve the climate-change problem, and to prevent massive harm in the US, is for all the world’s big emitters [of CO2] to agree to take account of the global damage.

There’s the heart of the political concern and a demonstration of Sunstein’s bias.

Carbon’s role in the environment is its contribution to acid rain through its role as a constituent of CO2. That problem has been solved, years ago.

CO2’s role in climate is demonstrated by ice cores that show atmospheric CO2 rises after planetary warming has begun and by longer records that show, over geologic time, a lack of correlation between atmospheric CO2 and planetary temperature. That problem does not exist.

Finally, there is some overlap between environment and climate, but they are not interchangeable terms, even though Sunstein uses them so.