Oh my god!!!! We were talking about Descartes today in math!!! Wait no that was yesterday...hahaha whatever. I know Descartes was a mathematician...he was the guy who cane up with linear equations. So he's also the guy who came up with the coordinate plane. As for science......I'm not sure what he did. And Francis bacon? Please don't kill me for saying this if it's not true...but did he invent bacon? I saw him on the scientist list in science for this project we did but I don't know what he did...sorry this answer isn't really helpful or good...:/