1、Some isotopes can be radioactive, and that includes the ones that were released during the meltdown at the Fukushima nuclear plant in Japan last year. A lot of that material ended up in the Pacific Ocean, and scientists have been studying its impact on fish and plant life.The results that were repor
2、ted on Tuesday are kind of a good news-bad news situation. Bad news: the levels of radioactive materials are higher than they were before the meltdown.The good news: theyre not high enough to pose a threat to the public.So theres at least some positive news there.The same cant be said for Japans eco
3、nomy right now. Kyung Lah reports on how bad things are for the island nation.The economic news out of Japan is not just bad; it is historic.The government of Japan is saying for the month of January this country logged a record trade deficit of $18.6 billion U.S. dollars. That is the highest since
4、this country started keeping track in 1979. It is higher than in the aftermath of a 2008 financial crisis. It is certainly setting off some alarm bells and concerns about the health of this economy.There was also other bad news. Thats showing that foreign investment out of Japan was going overseas,
5、both among foreign companies, international companies choosing not to do business here in Japan, and also Japanese corporations pushing production outside of Japan.For the second straight year, that exodus was continuing. It is the second highest on record.So again, alarm bells being set off that th
6、ere is something wrong with the state of the worlds third largest economy - Kyung Lah, CNN, Tokyo.Todays Shoutout goes out to Ms. Fernandezs social studies class at Oliveira Middle School in Brownsville, Texas.What is the name for soil that is frozen for more than two years? You know what to do here
7、. Is it mantle, taiga, permafrost or savanna? Youve got three seconds, go.Permafrost is the name for ground thats been constantly frozen for at least two years. Thats your answer, and thats your Shoutout.It may be frozen, but that doesnt mean there isnt anything underneath. For example, Russian scie
8、ntists found some seeds a few years ago in Siberia. Now these things were chilling out under the permafrost for 300 centuries, and now theyve helped regrow an ancient plant.Chad Myers talked with CNNs Brooke Baldwin about how it all happened.Scientists digging down in the permafrost -The permafrost?
9、Find burrows from squirrels from 30,000 years ago. These seeds, fur, fruit still in the burrows that the squirrel didnt eat.They take it - they take it to their scientific lab, kind of a little bit of magic, kind of cloning, kind of stuff. They find the placenta part, the tissue of the middle. You c
10、ouldnt just plant the seeds.Wouldnt be viable.Because they wouldnt be viable. They would have rotted.Placenta part of the seed?And they took it - almost like science fiction. This is like, you know, Im thinking you know, OK, here come the dinosaurs, if we do this right. They tried to do this years a
11、go. They tried to do it with the woolly mammoth years ago. It didnt work.The DNA of the woolly mammoth had broken down. But they found the DNA of this plant. They cloned the plant. They made it. They planted the seed that they made. It grew a real plant.They took those seeds from that plant, planted
12、 it again and now -See my jaws like -Again.Americans have been commemorating Black History Month throughout February, and a new museum dedicated to that topic broke ground yesterday.Its the Smithsonians National Museum of African-American History and Culture, and this is a virtual tour of what itll
13、look like. The idea for a national black history museum first came up nearly 100 years ago. President Obama talked about that long road during yesterdays ceremony.This museum should inspire us as well. It should stand as proof that the most important things in life rarely come quickly or easily. It
14、should remind us that, although we have yet to reach the mountaintop, we cannot stop climbing. And, finally, I hope you guys can stomach another eating competition -Because thats what we have in store for todays Before We Go segment.Now, this time around the chosen delicacy is one of my favorites: d
15、onuts. And the time limit is five minutes. The winner downed an even dozen, which is a little short of his personal record. Before you consider entering, keep in mind that these arent your average pastry treats. Theyre made extra large and they have filling, too.So winning wont be a cakewalk. This i
16、s one serious competition, no holds barred. That rounds out todays show. For CNN Student News, Im Natisha Lance.有些同位素具有放射性,包括去年日本福岛核电站熔毁后被释放的那些。很多物质最终流入太平洋,科学家一直在研究其对鱼和植物生命的影响。在本周二报道的结果表明是一种有好有坏的情况。坏消息是:放射性物质的级别要比熔化前要高。好消息是:它们没有高到足以对公众造成威胁的程度。所以至少还有一些积极的消息。同样的不能说的还有现在日本的经济。昆拉报道这个岛国正面临着最坏的境况。日本的经济境况不
17、只是糟糕,而是具有历史意义的糟糕。日本政府表示这个国家1月赤字已经达到创纪录的186亿美元。这是自从这个国家在1979年以来的最高纪录。比2008年的金融危机影响还高。这肯定是为人们敲响了警钟,让人开始担忧这个国家的经济健康。还有其他的坏消息。外商对日本的投资都是海外,无论是在外国公司、国际公司都不选择在日本本土做生意,而且日本公司也是生产外销。连续第二年,出埃及记继续进行。这是连续第二的最高纪录。所以,这为人们敲响警钟,世界第三大经济的这个州有了问题CNN昆拉，东京报道。今天的大喊答题节目环节由德克萨斯州奥斯维尔欧利维亚中学费尔南德斯女士的社会研究班提供。冻结两年以上的土壤被称为什么?你知道
18、该怎么做。是覆盖物,白杨,永久冻土还是大草原?你有三秒钟时间,现在揭晓答案。冻结两年以上的土壤叫做永久冻土。你答对了吗？这就是本期的大喊答题节目。它可能会被冻结,但这并不意味着下面没有任何东西。例如,俄罗斯科学家几年前在西伯利亚 发现一些种子。这些种子已经在冻土下长眠300个世纪,现在它们正在帮助科学家们再生一株古老的植物。查德迈尔斯与CNN的布鲁克鲍德温谈论这是如何发生的。科学家们在冻土中挖掘。该地区的永久冻土层吗?他们发现了30000年前松鼠的洞穴。有这些种子、毛皮、水果仍在洞穴中,而松鼠没有吃掉。科学家们把它他们把它带回科学实验室,施加一种有点神奇的魔力,一种克隆,就是这一类的。他们发现
19、胎盘部位,组织的中间。你不能种植物种子。不会是可行的。因为他们不会是可行的。它们可能已经坏掉了。胎盘种子的一部分吗?他们把它,几乎像科幻小说一样。这就像,你知道,我想你知道,好的,如果我们这样做正确的话，恐龙就会到来。他们多年前就试图这样做。多年前他们试着去研究长毛猛犸象。而没有结果。长毛象的DNA坏掉了。但他们发现这种植物的DNA。他们克隆植物。他们做到了。他们种种子。它形成了真正的植物。他们看着那些植物的种子,种植了一遍,而现在看我的下巴，像再一次。美国人在2月一直在纪念黑人历史月,致力于这一纪念的新博物馆昨天正式落成。史密森国家博物馆展出非裔美国人的历史和文化,而且这看起来会像是一次虚拟
20、之旅。黑人国家历史博物馆的提议首次出现在将近100年前。总统奥巴马在昨天的仪式中表示这是漫长的道路。这个博物馆应该也会激励我们。它应该以历史作为证据,证明那些生命中最重要的东西来之不易。它应该提醒我们,虽然我们还没有到达山顶,但我们不能停止攀登。最后,我希望你们能忍受另一个大吃比赛的竟争因为那是我们今天的“在我们结束之前的部分。现在,这一次,选择的美味是我最喜欢的之一:甜甜圈。时间限制是五分钟。胜利者在狂吃12个后倒下,这比他的个人记录时间还少。你认为能参加之前,记住,这些都不是你的平常吃的那种。它们过于大，而你要做的就是它们填进肚子。所以赢得比赛不会是小事一件。这是一个严峻的竞争,而且毫不留情。这就是今天的CNN学生新闻,我是娜塔莎朗斯。* ，每天更新： ： .
