Morning Edition

On April 11 of this year, an extraordinary cluster of earthquakes struck off Sumatra. The largest shock, magnitude 8.7, produced stronger ground-shaking than any earthquake ever recorded. And it surprised seismologists by triggering more than a dozen moderate earthquakes around the world.

The quakes are also a sign of big changes to come in the Earth's crust.

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People are not getting much work done in parts of Europe. Last night, there were violent protests in Spain. They were protests against austerity measures, which is also the case in Greece, where a nationwide strike came today. It closed businesses and schools, and reporter Joanna Kakissis is following the story from Athens.

Joanna, what's been happening?

Pizzerias in Canada's Niagara Falls region say they've been offered cases of cheese smuggled from the U.S. In Canada, cheese costs three times as much as it does in the U.S. So drivers are paid a lot to drive contraband cheese across the border. CBC News reports Niagara police officers are alleged to be in on the scam.

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Good news this morning from the NFL. There were no bad calls by replacement officials last night. OK, there were no games last night. The much-maligned replacement refs don't take the field again until tomorrow night in Baltimore. They'll be officiating the Ravens/Cleveland Browns' game and you can probably expect a lot more scrutiny. The real refs and NFL owners did meet yesterday, but a settlement remains elusive.

NPR's sports correspondent Tom Goldman has been following developments. Tom, good morning.

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And let's go next to West Africa, where logging rights to more than 60 percent of Liberia's virgin rainforests have been granted to forestry companies since President Ellen Johnson Sirleaf came to power six years ago. A British advocacy group says the majority of those contracts are unregulated and warns of fraud and mismanagement. The government of Liberia says it is commissioning a full-scale investigation.

Tamasin Ford reports from Liberia.

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This is MORNING EDITION from NPR News. Good morning. I'm David Greene.

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And I'm Steve Inskeep.

Presidential candidate Mitt Romney has delivered a constant stream of criticism of President Obama, but he still confronts Republican voters who haven't heard enough.

GREENE: On a hidden videotape revealed this month, Romney was asked why he didn't hammer President Obama harder. He explained that he's trying to win over people who voted for the president in 2008.

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People aren't getting much work done in parts of Europe, treading water there. Greek workers called a nationwide strike for today, protesting austerity measures. Last night, there were violent protests in Spain. Demonstrators launched a new movement dubbed Occupy Congress, surrounding the Spanish Parliament with a human chain before clashing with police.

Lauren Frayer was in the crowd in Madrid.

(SOUNDBITE OF CHANTING PROTESTERS)

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China has just joined an exclusive, global club. They have launched their first aircraft carrier. The Liaoning is a Soviet ship that the Russian navy never actually put into service. To talk with us about the significance of this ship, we're joined from London by naval historian and defense analyst, Paul Beaver.

Mr. Beaver, good morning.

PAUL BEAVER: Good morning to you.

GREENE: So tell us about this ship.