I can. Thanks for the question.
I can point to Canada. The data in Canada indicates that, over the last 20 years, soil organic carbon in the agricultural regions that have produced biofuel feedstocks have increased substantially, so Canadian soils have become a net sink, if you will, for carbon sequestration. As a result, the carbon intensity reduction potential or biofuels produced off those have declined substantially.
Competent regulatory authorities supported by their scientists with deep LCA knowledge have examined all aspects of the biofuel supply chain, which the committee knows goes all the way from all of the crop inputs, forestry inputs, waste, etc., all the way through to tailpipe combustions. That's how we measure LCA.
The science 10 years ago on some of the other aspects was less well known, because these kinds of regulations have been promulgated so far and wide that there's an immense amount of work going into it and—