What chance does a five-foot-seven billionaire Jew who's divorced really have of becoming president?

Fifty percent of the world's population lives in cities. In a couple of decades, 70 percent of the world's population will be living in cities. Cities are where the problem is. Cities are where the solution is, where creativity exists to address the challenges and where they have most impact. This is why, in 2005, the C40 was founded, an organization of cities that address climate change. It started with 18 cities; now it's 91. Cities simply are the key to saving the planet.

Trees will improve property values, take pollutants out of the air, help with water runoff.

If you think of all the publicity about the terrible tragedy of Virginia Tech, we have a Virginia Tech in this country every day. It's just spread across 50 states.

I think it's a sign that the establishment is going to have to change. For too long they never thought about the average person, because the average person is not organized.

I like the theater, dining and chasing women. Let me put it this way: I am a single, straight billionaire in Manhattan. It's like a wet dream.

After all, the same steps that reduce carbon pollution also clean the air we breathe, which saves lives and reduces disease.