CNN News:專家研究抵美日本海嘯殘骸碎片造成的影響

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I'm back, happy to be with you for this Tuesday edition of CNN Student News and I want to thank Tommy for filling in for me.

Today we're going to start with an ending.

North Korea is calling off the truce that stopped the Korean war.

The conflict involved North Korea and China, fighting against South Korea and the U.S.

It ended in 1953 with an armistice, we covered the details on the war and the armistice.

Plus the ongoing tension between North and South Korea in our show on March 6th, you can find that in our online archives.

What's happening now is that North Korea says that truce is invalid, it's backing out of it, what does that mean?

We don't really know yet.

We know that North Korea is angry about new punishments from the United Nations over the North's controversial nuclear program.

We know North Korea is angry about military drills that the U.S. and South Korea are running right now.

After the announcement about the truce, South Korea try calling the North on a hotline that's set up between the two.

The North didn't answer.

Next today, we're moving over to Japan as that nation remembers a tragic anniversary this week.

Monday was filled with ceremonies, services and a moment of silent.

Exactly two years ago when earthquake struck, it was the largest one ever to hit the Island Nation.

And the quake created tsunami, a giant ocean wave, the two combined to cause massive amounts of damage, nearly 16,000 people died.

The tsunami led to a meltdown at the Fukushima-Daichi nuclear power plant.

Crews have been working on the plant ever since, but officials say it can take as much as 40 years to completely clean up the area and decontaminate it.

The effects of the quake and tsunami spread far beyond Japan.

This animation shows how huge amounts of debris were pulled out into the Pacific Ocean.

Kyung Lah explains why some of it is showing up.

Slamming the shores of one of Hawaii's most remote beaches, debris, big and small, covering every inch of the Kamilo Beach coastline, the foreign markings tell where some of it comes from.

"These are definitely from Japan, this is some type of pickle, and that's definitely Japanese."

Hawaii Wildlife Fund's Megan Lamson has seen debris from Japan hit at a growing rates since fall.

Like a refrigerator with Japanese on the temperature dial, large buoys, even an intact fishing boat from Japan.

Sucked into the Pacific on that horrifying day two years ago, traveling through the Pacific, volunteers like HWF had been fighting the already big problem of marine debris.

Only made worse to the 1.5 million tons of floating tsunami debris.

It's disheartening to come out here and see all these marine debris in this area that's otherwise so remote, debris that's washing up from other countries.

So the debris is washing up onshore, it's also collecting out in the water.

The areas outlined in red are called gyres, these are currents out in the ocean, and because of way they work, things that float into them kind of get trapped there.

That includes debris from the Japan tsunami, scientists are finding that trash, especially plastic inside fish and birds out in the Pacific.

We're going to look at the impact on wildlife, but heads up to teachers.

This report involves some shots of dissection, so you probably want to preview it before showing it to your class, once again, here is Kyung Lah.

Look at what's inside this albatross of seabird, found dead, plastics filled its body.

"So little fat."

David Hyrenbach's team are researching the alarming rate of debris in the birds.

"So here you see."

"Wow, it is filled with plastic.""Yes"

This is the stomach of a two months old albatross.

"Is that part of a drain?"

"Maybe, oh, it's a brush, look at that, you see."