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President Biden Visits Ukraine; North Korea Fires Two More Missiles Into Its Pacific "Firing Range".

COY WIRE, CNN 10 ANCHOR: Hello, everyone. Terrific Tuesday to you.

It`s your boy Coy. I hope you had a wonderful weekend and a pleasant President`s Day holiday. I am pumped to be back here with you to start this

week off strong.

We`re going to begin with the latest news out of Ukraine. This week, President Biden made an unexpected visit to Kyiv. It was his first visit

since Russia launched its full-scale invasion of Ukraine almost a year ago.

Here`s part of what the president had to say about this trip:

(BEGIN VIDEO CLIP)

JOE BIDEN, PRESIDENT OF THE UNITED STATES: That dark night one year ago, the world was literally at the time bracing for the fall of Kyiv. One year

later, Kyiv stands, and Ukraine stands, democracy stands. The Americans stand with you and the world stands with you.

(END VIDEO CLIP)

WIRE: Now, there is a long history of American presidents visiting war zones. This trip was unprecedented in modern history however because the

American president traveled to an active war zone without a large U.S. military presence. President Biden said his trip was to reaffirm the,
 

reaffirm [͵riəˋfɝm] v. 重申

quote, unwavering support that the United States holds for Ukraine.
 

unwavering [͵ʌnˋwevərɪŋ] adj. 不动摇的；坚定的

But, earlier this month, the United States said Russia has committed crimes against humanity in Ukraine. That was an escalation of what they`d said
 

escalation [͵ɛskəˋleʃən] n. 扩大，增加

previously. Russia called the accusation an excuse for Washington to further the conflict.

During his trip, President Biden also announced new military assistance for Ukraine and incoming sanctions against Moscow. We`ll keep you informed on

any more updates from the president`s trip as well as new information on the ongoing war overseas.

And over the weekend, the secretive nation of North Korea launched a series of missile tests off the coast of the Korean peninsula. The country says

the missiles have enough range to hit the United States. But the U.S. has said this weekend`s events, they don`t pose any immediate threat to U.S.

personnel or territory.

The tests do however highlight the destabilizing impact of North Korea`s illegal missile program. North Korean Leader Kim Jong-un`s sister warned of

more threats to come unless the United States halts military drills with South Korea.

More now from Paula Hancocks, CNN international correspondent based in Seoul, South Korea.

(BEGIN VIDEOTAPE)

PAULA HANCOCKS, CNN INTERNATIONAL CORRESPONDENT: It has been a busy few days on the Korean peninsula. North Korea on Saturday launching a

significant missile. On Sunday and Monday, we have seen tit-for-tat retaliation from both sides -- North Korea, and also the U.S. and South
 

tit-for-tat ph. 针锋相对; 一报还一报

retaliation [rɪ͵tælɪˋeʃən] n. 报复

Korea on the other side.

So what we saw on Saturday, Pyongyang admitted a day later, was an intercontinental ballistic missile. Now these they claim can hit mainland

United States and they are the ones that do concern Washington. We heard from Kim Yo-jong, Kim Jong-un`s sister, that this actually shows that they

have missile re-entry technology.

Now, it`s very difficult to know if that is in fact the case, but that is what Pyongyang is claiming at this point. So what we saw on Sunday then

just one day later was a concerted show of force by the U.S. and South Korean air force, air forces. They flew sorties over the Korean peninsula,
 

concerted [kənˋsɝtɪd] adj. 一致的，协同的

sortie [ˋsɔrti] n.（空军）单机出击

including at least one B-1 bomber, escorted by South Korean fighter jets and then in response to that, we saw this Monday morning from Pyongyang two

launches.

Now they say that it was a super large multiple rocket launcher exercise in retaliation for what they saw the day before. So this is really a latest
 

launcher [ˋlɔntʃɚ] n. 发射者；发射器

cycle of tit-for-tat retaliation, but certainly, the Saturday launch was the significant one. But we`re not expecting the tensions or this tit for

tat retaliation to diminish anytime soon, because Pyongyang says it is doing so because the U.S. and South Korea are carrying out joint military

drills, and if they continue to do that, then they will continue to respond.

Now we know that this week at the Pentagon, there will be a nuclear tabletop drill between the U.S. and South Korea, and then next month, there

will be a larger joint military drill between the two countries.

(END VIDEOTAPE)

WIRE: Up next, we`re traveling to Canada in search of zombies but not the type of zombies you`d typically think of. Ever heard of zombie fires, I had
 

zombie fire 殭尸火; 之所以这样称呼，是因为虽然冬天寒冷潮湿，这些火苗仍继续在泥炭地中闷烧，当干燥天气来临时再次旺起来，引发新的大火，破坏泥炭地这个重要碳汇。

neither until now.

They`re essentially fires that were never totally put out at the end of a fire season and they burn underground threatening to come back from beneath

the surface at any moment to wreak havoc once more. We`ll hear more now from an international team of researchers who are on the hunt for the next
 

on the hunt  正在寻找, 正在搜索…

fire that could be lurking beneath the earth`s surface.

(BEGIN VIDEOTAPE)

REPORTER: In the remote boreal forests of Canada`s Northwest Territories, and Rebecca Scholten, along with an international team of researchers, is
 

boreal [ˋborɪəl] adj. 北的；北风的；北极的

on the hunt for signs of a rare and destructive phenomenon.

REBECCA SCHOLTEN, PHD STUDENT, VU AMSTERDAM: So the first thing you notice when you get to a site that has had a zombie fire is that a lot of these

trees have fallen over and that is because of the underground burning that is happening.

REPORTER: In 2015, this region of boreal forest was the scene of an overwintering fire also known as a zombie fire. These are rare so we don`t
 

overwinter [͵ovɚˋwɪntɚ] v. 过冬

have any footage of them but they can look just like these regular forest fires, except they`re back from the dead.

SCHOLTEN: So these are fires that are not extinguished at the end of a fire season but instead, they smoldered deep into the organic soil layer
 

extinguish [ɪkˋstɪŋgwɪʃ] v. 熄灭（火等）

smolder [ˋsmoldɚ] v.（无火苗地）闷烧

and when the snow comes the snow kind of protects them from the adverse winter conditions and that makes it possible for them to smolder or

throughout winter and when the snow melts and there`s dry fuels available again these fires come up to the surface again and start a new flaming

forest fire.

REPORTER: In 2021, Scholten published the first ever scientific study to detect zombie fires using satellites and reports from local fire managers

as part of her PhD.

For example, in the summer of 2015, a fire in southwest Alaska blazed across 26 square miles. Winter came and snow covered the fire site. But the

following spring, the fire returned along the old burn scar, evidence Scholten says of a zombie fire.

By burning through the soil and the roots, zombie fires can be more damaging to the forest than regular fires, making it harder for them to

recover. But that`s not all, these boreal soils store huge amounts of carbon, so burning them releases it as carbon dioxide into the atmosphere.

Zombie fires are rare but Scholten found that they are increasing due to climate change.

SCHOLTEN: So I think zombie fires a very good poster child for what is happening to arctic wildfires in general. So we see fire regimes are
 

poster child 典型代表

fire regime 火情(指在一个区域内长期盛行的丛林大火和野火的形式，频率和强度。)

intensifying and this has very important impact on the ecosystems that of course has an impact on our climate. And that is why I think everyone in

the world should care about these fires.

(END VIDEOTAPE)

WIRE: Ten-second trivia:

Which of these words comes from a Latin term that described a wind from the north?

Zephyr, bluster, boreal, or arboreal?

Zephyr was a west wind but when you`re talking about a north wind, you`re speaking in boreal terms.
 

zephyr [ˋzɛfɚ] n.【文】西风

(BEGIN VIDEOTAPE)

UNIDENTIFIED MALE: Oh, yeah, it`s going all the way. Oh, yeah, right above, wow look at how bright that is.

SUBTITLE: This erupting aurora was caught on camera in Alaska.

Particles from explosions on the sun interact with atmospheric gases, creating the mesmerizing light displays.
 

mesmerize [ˋmɛsmə͵raɪz] v. 迷惑

Vincent Ledvina, a doctoral student in space physics, has been photographic polar lights for years.

(MUSIC)

(END VIDEOTAPE)

WIRE: All right. Today`s story getting a 10 out of 10, a shark attack, only this time, it`s the shark getting attacked by a dog. That`s right, a

big old hammerhead shark. One boater said it was probably about 12 feet long, just minding this business in the Bahamas until a dog spots the monster
 

hammerhead shark 双髻鲨

boater [ˋbotɚ] n. 乘船的人；划船的人

cruising beneath the surface and cannonball, the dog jumps into the water and starts chasing the shark away. The people on the tour boat were

screaming in disbelief in horror the dog is the pet of the caretaker who manages the private island.

Pardon my sarcasm little doggy, but something tells me year one jawsitively lucky pup. The boaters were relieved when the dog safely swam back to the
 

sarcasm [ˋsɑrkæzm] n. 讽刺，挖苦，嘲笑

shore unharmed.

Fun fact for the day: did you know that baby sharks are called pups? Learn something new every day.

Shout out time now. Hudsonville High School in Hudsonville, Michigan, we see you.

Also shout out to Mr. Ben Lewis at Brenham Middle School in Brenham, Texas. He challenged his students to interview a military veteran an immigrant and

an American citizen over 60 years old. To learn about different perspectives and to gain better understanding of what it means to be an

American, he turned the interviews into this book.Proceeds are going to help deserving military veterans.
 

proceeds [ˋprosidz] n. 收益，收入

We salute you, Mr. Lewis, and to all of the students who sent me a lovely note with all these signatures, you totally rocked it out.

We`ll see you tomorrow, everyone. I`m Coy Wire and we are CNN 10.

END