CARL AZUZ, CNN STUDENT NEWS ANCHOR:  Hello, everyone.  I`m Carl Azuz.   Thank you for taking ten minutes to get up to speed on international 
current events.
We`re  starting this Tuesday on the world`s highest mountain.  Every year  since 1900, at least one person has died climbing Nepal`s Mount Everest,  
and this year is no exception.  The 2016 climbing season has  claimed its first victims.  One climber died on Thursday, one on Friday,  one on 
Saturday, and one on Sunday.  
And these  deaths coming so close together have frightened many of the climbers who  are starting their trip back down the mountain.  
So, why did  this happen now?  Well, most people attempt to climb Everest in April  and May.  One reason, the winds are calmer.  In other months, there 
are usually hurricane force winds at the summit.  There are also tends  to be less snowfalling at this time of year, though temperatures are  still 
will below zero degrees Fahrenheit.
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CHAD  MYERS, AMS METEOROLOGIST:  Mount Everest spring climbing season has  turned deadly with four deaths now in the past four days.  You have to  get 
to 29,000 feet to get to the top of Mount Everest.  And  above 26,000 feet is called the death zone.  There`s just not enough  oxygen up there for your 
body to last very long.
Now,  this is the first real death from climbing that we`ve seen since they  close the mountain because of the earthquake.  I remember, there was  also 
the avalanche that closed part of the climbing season in 2015, 2014.  So, not many people have been up there.  
They`re  also saying that there are so many people trying to get to the top  because it is now open again but then slowing the ascent and keeping  those 
people, keeping the climbers in that dead zone longer  because it`s such a slow climb to the top.  Avalanches kill people.   Injuries kill people from 
falling, or from ISIS collapses,  also weather from exposure, and, of course, just altitude sickness alone  is killing people up there because of 
the height of Mount Everest.
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AZUZ:   But for many climbers, the danger is what actually attracts them to  Mount Everest.  And since this year`s climbing season began, about 300 
people have made it to the top.
We  don`t know yet if the reason deaths there will impact tourism.  That`s a  major industry in Nepal.  But tragedies can significant impact the  number 
of people who might want to visit a country.  
For  example, in Egypt, another economy that benefits from tourism, visits  were down by 40 percent early this year, as compared to early 2015.  And  
though investigators aren`t certain what caused EgyptAir  Flight 804 to crash in the Mediterranean last week, that event, along  with some others in 
recent years could deeply hurt Egypt.
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CRISTINA  ALESCI, CNN CORRESPONDENT:  This crash is a major blow to a fragile but  crucial part of the economy.  Egypt has been struggling to 
bring back visitors really since 2010 when the number of tourists hit a  record high of over 14 million.  Last year, that number was about nine 
million.  
Now,  obviously, this decline has impacted the amount of money visitors spend  in the country, which has been slashed in half over that same time 
period.  Just to put this into context, tourism accounts for about 11  percent of all economic activity, and 11 percent of jobs in the country  are 
actually tied to the industry itself.  This decline in  tourism started in 2011, with the revolution, the Arab spring, and  unrest after the coup that 
scared off a ton of people from visiting.  
But  visitors were actually starting to return in 2015.  In fact, "The  Washington Post` even ran a headline on it.  Then, two incidents hurt  the 
recovery.  Terrorists brought down a Russian jet just  after it took off from an Egyptian resort, and then, a domestic EgyptAir  flight was hijacked 
in March.  These and other incidents are  raising questions for tourists who have really been vacationing in this  region for years, and for many of 
these countries, especially those along the Mediterranean, tourism is a crucial part of the economy.
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AZUZ:   The World Health Organization, which is part of the United Nations,  had an emergency meeting recently to discuss an outbreak of yellow  fever.  
It started in the southern African nation of Angola  last December.  Since then, more than 2,400 people have been infected  and 300 people have died 
from the disease.  
That  makes this the worst outbreak of yellow fever in Angola in 30 years.   But it does spread to other countries.  There had been dozen of cases in  
the neighboring Democratic Republic of Congo and in nearby  Uganda.  So, what health officials are doing is directing millions of  vaccines to this 
region.  They`re hoping that will help create a barrier against the spread of this disease.
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DR.  SANJAY GUPTA, CNN CHIEF MEDICAL CORRESPONDENT:  Yellow fever is a  disease caused by a virus that can make you -- you guessed it -- turned 
yellow.
The  virus comes from a bite of a mosquito, and the yellow is because your  lever starts to fail and you develop jaundice, a yellow of the eyes and  the 
skin.  They also get fevers, chills, back pain and  generalized aching.  From inspection to illness typically takes three to  second days.
Now, most people are going to improve after these  initial symptoms.  However, about 15 percent will develop a more severe  form of the disease.  
There is no treatment or cure for yellow  fever.  Doctors are going to work to alleviate symptoms -- prescribing  rest, fluids, medications.  The best 
way to avoid yellow fever  is to get vaccinated, especially if traveling to Africa and South  America, use insect repellant, wear a thick, long sleeve 
clothing and sleep in a screen-in or air-conditioned room as much as possible.
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AZUZ:   Since the Vietnam War, the U.S. has banned the sale of American  military weapons to the communist country of Vietnam.  But yesterday,  while 
on a trip there, President Obama removed that ban.  He  says it`s part of the work to normalize relations between America and  Vietnam, and that that 
include more military cooperation.  
Critics  say President Obama should have waited until Vietnam improves its human  rights record before lifting the ban.  A human rights watch official 
says the president gave the Asian country a reward it did not deserve.  
But  international experts say this isn`t just about Vietnam and the U.S.   They say China factors in.  It`s involved in an international dispute  over 
what country controls territory in the South China Sea.  Some U.S. officials see Vietnam as a balance to China`s influence in the  region.
From coast to coast and across the sea, it`s time for the CNN STUDENT NEWS "Roll Call".
We`re starting in Spokane, Washington.  Why?  Because the Pirates are there at John R. Rogers High School.  
Next  to the Eastern U.S. city of Westminster, South Carolina.  Great to see  you everyone at Cherokee Creek Boys School watching today.
And jumping over the Atlantic, we land in Toulouse, France, where we`re visiting our viewers at Bellevue Middle School.
When  you walk through a spider web, you`re probably more concern about  whether anything was on it, at the time, then you are impressed by the 
relative strength of the structure.  But a professor at Oxford  University believes that spider silk may help in fixing damage nerves in  humans and 
regenerating joints.  For this professor, the webs  (INAUDIBLE) web hold hope for a new silk age with advances in science  and medicine.
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DR. FRITZ VOLLRATH:  I`m Fritz Volltrath.  I work on spiders and spider webs and spider silks and on silkworm silks.  
Spider  webs are really, really interesting structure.  For a human comparison,  it would be like if you could make a net the size of a football 
field, will you sit in the center and the next could catch the equivalent of the jumbo jet.  That is pretty amazing.
The  question is, can we use these silks, whether they`re from spider or  silkworm, to help in regenerative medicine.  There`s a lot of interest  in 
the medical community in silks as a potential culture,  growing replacement body parts potentially like ears in the way they use  in collagen, may be 
for 3D printing things.
We can  fix a nerve that`s been crashed.  We can connect the two ends with a  sheet that`s filled with spider silk and the nerves will grow along this  
spider silk threads and connect and then the person can move the arm again.
And  now, we are in human trials for some of these implants and they seem to  work very well.  I don`t see at this stage anything that would be off 
limits.
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AZUZ:   What is purple, plastic, made by a 3D printer and can totally rock a  Mozart concerto?  Well, here you go.  Now, to be fair this is not a 
Stradivarius.  The girl playing it says it has a more muted sound than a  wooden violin and that there are limits to its pitch.  
Still,  considering that it was created by a high school senior who is studying  sound waves for a physics class, we`re thinking her grade is 
somewhere in the key of eight.  
The  story certainly violins itself to puns.  You could say it was worth the  trouble that with musicians and inventors alike, it razernates (ph).   We 
can string you along for days on Stradivarius word plays.  But before you tune us out, we`ll just take a bow.
CNN STUDENT NEWS will be on the air through next Friday, June 3rd.  After that, our summer break begins.