Dolphins are washing ashore in alarming numbers in the Mid-Atlantic states this summer. More than 160 deaths of dolphins have been reported since early July and that's the worst fate in 26 years. Response teams from New York to Virginia are trying to determine just what's killing all these dolphins. Charlie Potter is working with one of those teams at the Virginia Aquarium and Marine Science Center.
He would be probably the first to wish you a happy International Geocaching Day. Geo what?
DAVE PREBECK: Geocaching is basically a high tech scavenger hunt.
SIMON: That's Dave Prebeck, president of NOVAGO, the Northern Virginia Geocaching organization.
PREBECK: We have people go out and hide something and then they post the latitude and longitude on a website - geocaching.com is the primary one - and then those of us with GPS's get the latitude and longitude from the site and go out looking for them.
When it comes to Tiny Desk Concerts, we're suckers for milestones at NPR Music: We're gearing up to acknowledge No. 300, for example, and are constantly taking note of the first time a musician trots out a particular rare instrument or does something else no one has done in front of us before.
Immigrant and farm worker rights groups came from Los Angeles to Bakersfield, Calif., by the busload this week. Bakersfield, in the state's Central Valley, is farm country, and immigration is a complex issue here.
The groups were converging on the home of the third-most powerful Republican in the House, Majority Whip Kevin McCarthy.
Activists across the country are targeting a number of Republican members of Congress this summer, trying to pressure the House to take up the immigration reform bill passed in the Senate.