Natural gas is a carbon fuel, so yes, there are greenhouse gases, or GHGs, associated with it. It is the cleanest carbon fuel, used across the world as a baseline or a foundation for these systems.
More broadly, as we develop these types of systems, we see the natural gas business as an evolution. From where we are today, with it being 100% of the energy that flows through our pipes, as these systems are built up, there will be an integrated system down the road. It's a much smaller component by 2050, let's say, and we do have all these different pieces here.
So we view that as a vision of where we see our role and the future of natural gas going across the board, as the lowest carbon fuel, but definitely we're going to see less use of that and slightly different applications as it integrates with all these different technologies that are available today.