When it comes to renewable energy, there's no reason America should settle for second best.

Americans increasingly understand that clean energy is more than just an environmental issue. It is crucial to reducing our dangerous dependence on foreign countries.

Innovation is what America does best. Whether it is the Apollo Project to the moon, developing the most advanced defense technologies available, the rise of the Internet or the latest advancements in biomedical gene therapies, our nation leads the world in transformative innovations.

When it comes to renewable energy, there's no reason America should settle for second best.

All policies should be guided by science, not just whose voice is the loudest.

I think Democrats are always challenged to have a unified message, and it's in part because our strength is our diversity as a party, but our weakness is also the fact that because we're so diverse, we have a hard time getting on one page on message.

We've clearly seen that Tea Party Republicans are willing to take our economy hostage just to score political points, but I'm not willing to do that.