Meanwhile, several studies have found that cleaner, clearer air due to falling pollution from China and lower sulfur marine fuels made only a small contribution to last year’s temperatures. One study, submitted to Atmospheric Chemistry and Physics, found that declining pollution could raise global temperatures by 0.03°C over the next 20 years, with the strongest effect not occurring until later this decade. It’s not nothing, says study co-author Duncan Watson-Parris, an atmospheric physicist at Scripps, but far too little to explain last year. Taken together, says Mika Rantanen, a climate scientist at the Finnish Meteorological Institute, the results are “a good reminder that it was indeed El Niño that was the major player.” //

None of the data justifies making energy more expensive. None of the data justify covering thousands of square miles of open ground, including vital wildlife habitat, with windmills and solar panels.