, three american physicists who have been working on the collider for years. >> steve goldfarb: it matteredstahl: goldfarb told us that he was amazed at how many people went online to watch the meeting at which the discovery was announced. >> goldfarb: you know, one billion people by the end of that week had seen video from that web cast. so a significant portion of our planet was interested enough to watch something which was a very technical seminar. >> stahl: why do you think it's ignited so much public interest? >> laura jeanty: i think, ultimately, what we're doing has a lot of philosophical motivations. we're interested in understanding how things work, and i think everybody connects to that idea. and everybody is interested when science pushes the boundary of our understanding. >> stahl: we're now into season two with a much more powerful collider. what are you going to look for now? >> goldfarb: we have big questions, really big questions. >> stahl: for instance, can they find something smaller than the quark, one of the smallest particles discovered thus far? >> goldfarb: is the qu