This is WEEKEND EDITION from NPR News. I'm Scott Simon. It seems that every week, there's a new study out on political polarization in America. More and more, we talk to, vote with, and get our news from only those who think the way that we do. So, this week we sent reporters on a couple of polar expeditions to political gatherings on the left and the right. And in a moment, we'll hear from NPR's Scott Horsley at Netroots Nation in Rhode Island. First, now here's NPR's David Schaper at the Conservative Political Action Conference in Chicago.
SCOTT HORSLEY, BYLINE: And I'm Scott Horsley in Providence. Netroots Nation is part pep rally, part technology seminar, and - this year at least - part postmortem. Netroots chairman Adam Bonin kicked off the gathering just two days after the Wisconsin vote, which was viewed very differently in this crowd than it was by the audience at CPAC.
This is WEEKEND EDITION from NPR News. I'm Scott Simon. Time for sports.
(SOUNDBITE OF MUSIC)
SIMON: And there won't be a Triple Crown winner this year. But it's still a weekend for major matchups of all kinds, with Nadal and Djokovic, LeBron James and the Boston Celtics, and the peerless Manny Pacquiao in action. NPR Sports Correspondent Tom Goldman joins us.