And let's talk about the presidential campaign with Mara Liasson, NPR's national political correspondent. Mara, good morning.
MARA LIASSON, BYLINE: Good morning, David.
GREENE: So, we just heard in Cheryl's piece that the NAACP is meeting. They're going to hear from Mitt Romney. They're going to hear from Vice President Joe Biden. They are not expected to hear from President Obama. What do you make of him sitting this one out?
And let's turn from political to science. Researchers discovered what looks to be the elusive Higgs boson. It's a subatomic particle they've spent nearly 50 years searching for. So, this was special vindication for their efforts, and special vindication for one of the scientists who's been searching for the particle - a man named Gordy Kane. Kane won $100 in a bet with Stephen Hawking, arguably the world's smartest person alive today. Hawking admitted defeat on the BBC.
The NAACP, the nation's oldest civil rights organization, holds its annual convention in Houston this week. As in any election season, the group is focused on voting rights and voter turnout. But this year, there's another issue that's front of mind: the dramatically high rate of unemployment rate among African-Americans.
Presidential candidate Mitt Romney will address the NAACP convention on Wednesday, and Vice President Joe Biden is scheduled to speak the following day. NAACP members are ready to hear their plans.