sentence1: Thus, recent evidence suggests that by not including an estimate of reductions in short-term mortality due to changes in ambient ozone, both the Base and Alternative Estimates may underestimate the benefits of implementation of the Clear Skies Act and true is true and true is true and true is true and true is true and true is true .
sentence2: Recent findings say that Base and Alternative estimates may not quite see all of the benefits of the Clear Skies Act.