so, yes, he cared about snell daughters, -- snail darters, butterflies. at a sunday on -- >> sunday on q & a on c-span. or listen on c-span satellite radio. download the c-span podcast and what part one of our interview with douglas brinkley on c- span.org. >> "washington journal" continues. host: we want to recommend -- we want to welcome representative rick boucher. the issue of captain trade is in the news, but briefly explain what that is about -- the issue of cat and trade is in the news, but be fully explain what that is about . guest: they would receive emission allowances, they could trade those on the market. they could purchase offsets for entities where the emissions could be reduced at perhaps a lower price, and it relies on the market to achieve maximum flexibility. host: will this result in higher taxes? guest: no. it is not a tax. it is purely a regulatory program, and the market will be relied upon to drive investment to the place where the emission reduction can be taken the most economically. host: so who pays for it? guest: well, inevit