National and World News from NPR

Coyotes were first spotted in New York City in the 1990s. Now they are thought to be permanent residents of the Bronx, and have been seen in Queens and Manhattan. Wildlife biologist Mark Weckel, of the Mianus River Gorge Preserve, is documenting their immigration through camera traps in New York City parks.

Opinion about the Trayvon Martin shooting is sharply divided by race, a new USA Today/Gallup poll finds.

The divide is clear, when pollsters asked if George Zimmerman, the Neighborhood Watch volunteer who shot and killed the black, unarmed teenager, was guilty of a crime.

A little more than half of the African Americans polled said he was "definitely guilty," while only 15 percent of non-blacks shared the same opinion.

The poll also found:

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MICHEL MARTIN, HOST:

The city's leaders agreed to a compromise with state officials this week, that may save Detroit from bankruptcy. But Detroit Free Press columnist Rochelle Riley tells host Michel Martin that a lot more work needs to be done to save the struggling city. They're also joined by NPR Senior Business Editor Marilyn Geewax.

Mitt Romney's sweep in Tuesday's primaries essentially signals the beginning of the general election campaign. And President Obama joins the fray, attacking Romney by name in a speech to news editors; the former Massachusetts governor returns the favor a day later. Paul Ryan draws attention from the president as well as those speculating on the GOP ticket. NPR's Ron Elving and Ken Rudin have the latest in this week's political roundup.

It sounds like the plot of a Dan Brown thriller: A powerful medieval pope makes a secret pact to prop up the fishing industry that ultimately alters global economics. The result: Millions of Catholics around the world end up eating fish on Fridays as part of a religious observance.