instead of that being absorbed in certain material, you can use small particulate matter at the nanoscale. so we're investing a lot of research in that. we're investing in ways of -- another way is to separate oxygen from nitrogen. >> dr. chu, i guess what i would ask, this is the danger of having someone who actually knows something about science testify. >> i'll try to suppress it. >> i guess i would ask, if you're willing, i'll submit a question for the record. i know a lot of members of the committee would be interested in your response. both on the specific technological improvements you would recommend, but also what the department sees as the pathway forward here. and i don't see it in the budget and, again, i think it would be very valuable to the committee. >> in a short, very brief time i say the path forward is to take advantage of the industry's interest on the piloting side in the carbon capture utilization. >> we want it to be cost-effective. it seems to me there is an opportunity here. and we're not taking advantage of it. with regard to uranium enrichment, i appreciate the