particle at the end of the universe. >> great, now i know how the universe ends. >> please welcome sean carrollors plaus how's it going, nice to see you, dr. carroll. >> mr. doctor doctor. >> you can call me sean. >> stephen: thank you, dr. sean, thanks for coming back, a tv psychiatrist, dr. sean, theoretical physicist who theoretically helped you. okay, now you're back again to talk about one of the great mysteries of modern theoretical physics. and that is the particle at the end of the universe, how the hunt for the his bosan leads to us the edge of a new world. okay, you are, this is the second time you've been on to talk about this i think you're like the fourth or fifth guy who had to come on and explain to me what the hell is happening at the large hedron collider over there in switzerland, right. >> and not america, okay. not america. >> we had our chance. >> we did. >> it makes it hard to trust if it doesn't happen in the united states, doesn't it, science is everywhere. >> the same science,. >> really? >> in geneva as in new york city. >> but during the cold war when we were fighting