But a new report, released right after Trump nominated a climate skeptic to lead the EPA, shows that some states still have rising emissions.
Los Angeles is spending billions to revamp its airport. The move is spurring other cities to make similar investments.
Americans want to live more sustainable lives. Can governments keep up?
The decline of the mining industry started long before the Obama administration and will likely continue even with Trump in the White House. That's why local leaders are starting to diversify their economies and prepare their people for an uncertain future.