They concluded it was a genetic mutation and plan to check nearby sediment for potential pollutant causes.

他们得出结论，这是一种基因突变，并计划检查附近的沉积物以寻找潜在的污染源。

Oh, the Supreme Court has spoken on this issue a number of times and told us it's perfectly appropriate - in fact, our responsibility - to look at carbon as a potential pollutant in the Clean Air Act.

哦，最高法院已多次就此问题发言，并告诉我们，将碳视为《清洁空气法》中的潜在污染物是完全合适的——事实上，这是我们的责任。