When you're in office, there are tangible moments when you can see tangible successes.

Health care reform, the marquee legislative accomplishment of the Obama administration's first term, was passed before we entered the world of divided government.

To every New Yorker - and to all those who believed in what I tried to stand for - I sincerely apologize.

I don't have any particular expertise-I've never been a banker or an investment banker. But I did see an evolution in the system that I thought was problematic.

The pace of global warming is accelerating and the scale of the impact is devastating. The time for action is limited - we are approaching a tipping point beyond which the opportunity to reverse the damage of CO2 emissions will disappear.

While their fiscal views aren't mine, the moderates are the last reasonable voice in the current Republican Party.

The world has conducted a massive macro-economic experiment since the cataclysm of 2008. In Europe, the fans of austerity have had their chance, and the results have been a disaster.