There are skeptics who do not come to their view because they have a source of income from carbon polluters.

If the people that believed the moon landing was staged on a movie lot had access to unlimited money from large carbon polluters or some other special interest who wanted to confuse people into thinking that the moon landing didn't take place, I'm sure we'd have a robust debate about it right now.

The presidency is more than a popularity contest.

When energy prices go up, the difficulty of projecting demand also goes up - uncertainty goes up.

Many of the green places and open spaces that need protecting most today are in our own neighborhoods. In too many places, the beauty of local vistas has been degraded by decades of ill-planned and ill-coordinated development.

The moral imperative to make big changes is inescapable...that what we take for granted may not be here for our children

The good news is, we have everything we need now to respond to the challenge of global warming. We have all the technologies we need, more are being developed.... But we should not wait, we cannot wait, we must not wait.