Through rising seas, withering drought, catastrophic storms and other hallmarks of climate change, our world is telling us every way it knows how that it's time to cut the dangerous carbon pollution that's driving the climate crisis. Long before history judges our response, voters will decide which candidate best understands the threat we face.
Americans deserve to know about a presidential prospect's health, and questions about experience and integrity are, of course, legitimate areas of inquiry. But to imply that Hillary -- or any candidate -- should be discounted based on advancing age goes too far. Age is an asset; it's no disqualifier.