I'm not afraid to spend money on the R&D that's really going to move us to a cleaner energy source that I think is so much the answer to the issues of environmental responsibility and climate change.

So much of what we do addresses the issues that are associated with climate change, whether it's working to reduce emissions, whether it's working to nail down our renewables, whether it's ensuring great efficiency in accessing all of our energy sources.

Climate change is happening, humans are causing it, and I think this is perhaps the most serious environmental issue facing us.

Energy prices in general have been going up, as are concerns about energy security and climate change.

The oceans store an enormous amount of heat energy, and they act to buffer any rapid climate change. If there is any significant change in the amount of heat stored by the oceans, this would effect global temperatures.

This still commits us to quite a bit of climate change, but it leaves the door open to avoiding the largest and most devastating consequences.