Air pollution levels and left-wing party strength. Neumayer (2003a) investigates the effect of left-wing party strength on air pollution levels using a panel of 21 OECD countries observed over the period 1980-1999. Neumayer reports the two-way fixed-effects estimates of several measures of air pollution levels (like carbon dioxide emissions) regressed on measures of scale: (GDP and vehicle use); measures of composition (share of manufacturing and fossil fuels); and a measure of efficiency, as well as three measures of left-wing party strength, and one indicator of corporatism. The results find that parliamentary green/left-libertarian party strength is associated with lower pollution levels. The data set and Stata code are provided on the author's university webpage. (http://www2.1se.ac.uk/geographyAndEnvironment/whosWho/profiles/neum ayer/replicationdatasets2.aspx).

(a) Replicate Table 2 of Neumayer (2003a; p. 213) which reports the fixed and random effects estimates for carbon dioxide emissions for the period 1980-1999 as well as 1990-1999. Report the tests for country and time effects.

(b) Replicate Tables 3, 4, 5, and 6 of Neumayer (2003a; pp. 214-215) which report the fixed and random effects estimates for sulfur dioxide, nitrogen dioxide, carbon monoxide, and volatile organic compound emissions, respectively.