Sure.
The lowest hanging fruit in our sector has to do basically with two strategies. Here, I should point out that we actually have a road map for decarbonization that's been published for a number of years now, and if you want to dig into the details, you can look at it. That said, basically we need fuel substitution to lower carbon alternatives; clinker substitution, which means new cement recipes that reduce the most carbon-intensive ingredients in the formulation; and then, ongoing, more traditional process and efficiency improvements.
In the longer term, it's carbon capture technology that will be required to get us into the deep reduction territory.