Desert Sun: Seven years ago this month, Barack Obama stood on a stage in St. Paul, Minnesota, and claimed victory in the Democratic presidential primaries. Hillary Clinton hadn't conceded, but the numbers told the story. Obama had clinched the nomination.
He made some bold predictions that night. Among them: Future generations would tell their children that "this was the moment when the rise of the oceans began to slow and our planet began to heal."
With four-fifths of Obama's presidency now behind him,...