Monday is Emancipation Day in Washington, D.C. In 1862, more than 3,000 slaves in the nation's capital were freed. Host Michel Martin speaks with Washington, D.C. Mayor Vincent Gray about Emancipation Day, and why he says Washington still suffers from a type of slavery.

The big story at today's Boston Marathon is the weather — in particular the bright, sunny skies and temperatures in the 80s that have race officials worried about how well some of the 27,000 registered runners will cope with the heat for 26.2 miles.

As the Boston Globe says, the medical tents are likely going to be quite busy today. And the Globe says that:

RICHLAND, Wash. – Occupy Portland activists took to the road this weekend. About 100 protesters showed up in sunny downtown Richland Sunday afternoon. They were there to rally against nuclear power and in favor of cleaning up the Hanford Nuclear Reservation. Correspondent Anna King was there.

On a large stage Native Americans and Occupy coordinators like Mirium German voiced their concerns.

“Hanford is an environmental tragedy waiting to happen,” German said.

GOLD BEACH, Ore. -- Curry County Commissioners have rejected the state's plan to help put the county on a path to fiscal stability. From Oregon Public Broadcasting, April Baer reports the Commissioners say they can't support spending  $75,000 to pay for the committee that would work out a restructuring plan. 

A federal prosecutor who led the elite public integrity unit when the case against the late Alaska Sen. Ted Stevens collapsed has told associates he will leave the Justice Department.

In Burlington, Vt., hundreds of people showed up to try to break the record for world's largest cowbell ensemble. The jam band Phish organized the event to raise money for flood relief in Vermont.

The National Rifle Association's annual convention featured a display of shooting targets featuring zombies. Firing ranges across the country are offering zombie-themed shooting events. Sales of zombie targets are booming.

Transcript

STEVE INSKEEP, HOST:

Let's turn now, to the economics of a good meal. Tyler Cowen is an economist, author of the blog Marginal Revolution, and a serious eater. He seeks to use his understanding of economics to zero in on the best food and best restaurants, and he shares what he's learned in a book called "An Economist Gets Lunch." Cowen is a fan of local food. But for the taste, not because he thinks it will save the world.