The New York Times' series on President Obama's legacy powerfully illustrated this past week an enlightened politician's awareness of the impact of climate change on our planet.

Obama made it clear to Times reporters that more than health care reform, the economic rebound, even the historic black presidency, he considers climate change efforts the most enduring legacy of his presidency.

Global warming is a man-made natural disaster, a national security risk and a threat to the stability of the planet.

Scientists, scholars and an impressive number of retired military are in complete agreement: climate change is the most important issue facing our world.

That Obama has had to accomplish what he has -- and it hasn't been enough -- almost single-handedly is an achievement in a vacuum.

It is time to put it unequivocally because the future of our world demands it: no one who doesn't commit to immediate action on climate change is qualified to serve in public office.