The health effects of climate change sound a clarion warning that we must attend to a rapidly deteriorating environment. Polluted cities, severe droughts and flooding, and devastating storms are portents of a world in which risks to the health of the planet and the health of families are closely linked. We urgently need visionary and strategic leaders who can identify and implement local, national, and global public policies, build boundary-busting collaborative partnerships, and advocate effectively for change. How do we tame unsustainable resource consumption, protect human health, and become better stewards of the only planet we can inhabit?