CARL AZUZ, CNN 10 ANCHOR:  I`m Carl Azuz with CNN 10 -- your daily 10 minutes of world news explained.  
The Terminal High Altitude Area Defense or THAAD is a missile defense system.  It uses missile to stop missiles.  
And  the U.S. has deployed the first components of a THAAD system to South  Korea.  Why?  Because North Korea, which is a rival of both the South  and 
the U.S., has been test-launching missiles of its own lately and the THAAD system could potentially be used in self-defense.  
In  a clear example of how tensions have been rising in the Korean  Peninsula and abroad, China is getting involved in this.  It`s North  Korea`s only 
real ally in the world and it`s telling North  Korea to suspend its nuclear weapons program which other countries  consider illegal.  The Chinese 
officials are also strongly  opposed to the U.S. sending a THAAD system to South Korea.  They believe  it could be used to monitor potential missile 
launches from China as well.
How exactly does a THAAD system work and could it be effective against ICBMs, intercontinental ballistic missiles?
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TOM  FOREMAN, CNN CORRESPONDENT:  This missile defense system is a state of  the art array of vehicles, typically nine of them, most of them are 
launchers, but they also a couple of command centers and they have an  advanced radar system, which both acquires the targets and helps guide 
these missile-killing missiles toward that target.  
About  70 missiles would be with all of these trucks out here and which one  would be about like this, about 20 feet long, weigh about 2,000 pounds.   
This is the booster down here.  That gets it going.
And  once it gets closer to the target, this part will break away, leaving  only the front.  Up here, you have some advanced electronics and  infrared 
system that will unshroud in flight so it can seek  out the target very specifically and the control system that helps guide  it in.  
Collectively, all of this is called the "kill vehicle"  and the range on it, not too bad.  Across the ground, it can go about  125 miles away and about 
16 miles high.
Now, does it explode when it get there?  No, not at all.  What it does is simply intercept and ram into the target.  
Look  at this video from the military.  Bear in mind, when this thing takes  off and it`s meeting with an incoming missile, a threat out there, the 
incoming missile may very well be traveling close to 4,000 miles an hour.  So, when they hit, that`s the result.  
Military  analysts say you can`t really use this so effectively against great,  big ICBMs.  But for short range and middle range missiles, the kind 
that South Korea might be worried about from North Korea, yes, it`s got a pretty good record.
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(BEGIN VIDEO CLIP)
AZUZ (voice-over):  Ten-second trivia:
Which of these holidays was first held in 1911?
World Health Day, International Nurses Day, World Malaria Day or International Women`s Day?
In 1911, the first International Women`s Day was held in Austria, Denmark, Germany and Switzerland.
(END VIDEO CLIP)
AZUZ:   It was partially inspired by the efforts of American women to attain  the right to vote, better pay and shorter working hours.  Now, every  year 
on March 8th, International Women`s Day remembers the  progress made and obstacles faced by women.  It also celebrates their  courage and 
determination throughout history and the present.   All around the world, rallies, performances and marches were held as  part of the event.  
Separately, marches that coincided with  International Women`s Day were held in the U.S.  They were part of a  nationwide strike called "A Day Without A 
Woman".  It aimed to  draw attention to women`s struggles in the workplace.  Several school  districts were closed so that teachers could participate.
Another  international issue we`ve been highlighting is modern day slavery.  The  reports you`ve seen in our show are part of CNN`s Freedom Project which  
aims to draw attention to slavery and human trafficking and  help expose the criminals who are involved in it.  If you like to find  out more about how 
people are participating, the #MyFreedomDay  is active on Twitter and Instagram, so are some students at a private  school in Georgia`s capital.
(BEGIN VIDEOTAPE)
LYNDA  KINKADE, CNN CORRESPONDENT (voice-over):  Atlanta, the center of  America`s civil rights movement in the 20th century, today, home to many  
victims of modern day slavery.
It`s a global issue these teenagers are determined to fight locally.  
UNIDENTIFIED FEMALE:  Everyone`s going to be volunteering.  
KINKADE:   Founded in 2011, this club at the Atlanta International School was the  idea of a couple of students who had a passion for social justice.  
Now they`ve stirred a movement among young people.  
UNIDENTIFIED FEMALE:  Everyone in this entire room is going to be working with us.
KINKADE:  From bake sales, to selling fair trade chocolate, these students raise funds and awareness.  
(on camera):  What do students learn about modern day slavery by selling this type of chocolate?
UNIDENTIFIED  FEMALE:  Well, we just want to put the message out, that fair trade,  getting chocolate that`s been produced ethnically without human 
trafficking, is so much easier than a lot of people think.  
KINKADE (voice-over):  Child labor and modern day slavery are just some of the issues being discussed.  
UNIDENTIFIED FEMALE:  OK, question?
KINKADE:   The group meets in their lunch break every Wednesday.  It`s led by  three students, including Kit McCarthy (ph) and Amelia Castillo (ph).
UNIDENTIFIED FEMALE:  I was really surprised at the scale of the issue.  
KINKADE (on camera):  As you start to learn about this, what surprised you most?
UNIDENTIFIED FEMALE:  I think that it surprised me most that it was such a problem that hit so close to home.  
KINKADE:  When you speak to people your own age, how do you explain this issue?  It`s a pretty tough issue to talk about.  
UNIDENTIFIED  FEMALE:  Yes.  I would say the first step is to make it approachable.   Labor trafficking of children is just the most devastating 
part of it to me, because it`s everywhere.  It`s in everything we do, in  our phones, in the food we eat, in the clothes we buy, and it just  impacts 
us daily anytime we purchase something, every time we consume something, and I just didn`t know.
KINKADE (voice-over):  This group, now one of the most popular social clubs in school.  
UNIDENTIFIED  MALE:  It`s an issue that my school I feel gets very little male  representation.  And I feel it`s important for both genders to be 
involved and to take action.  
UNIDENTIFIED  MALE:  I see things like I see a t-shirt, for example and be like,  maybe someone was taken from their family and had to be forced to 
make that shirt, rather than it being made fair trade.
KINKADE  (n camera):  And it`s not just about raising awareness and raising  funds, you also lobby government.  Explain how that works. 
UNIDENTIFIED  FEMALE:  We take a group of students down to the capital.  Everyone  splits up and goes to their representatives and you know, writes 
them, they can write them notes, letters and things about why they think, you know, why this issue is so important.  
KINKADE  (voice-over):  Kevin Glass, headmaster of the Atlanta International  School, hopes these students will take the lessons learned here and  share 
that knowledge, passion, and activism, as they move through college and into the workforce.  
(on camera):  What do students bring to the table to tackle this issue that adults don`t?
KEVIN  GLASS, ATLANTA INTERNATIONAL SCHOOOL:  They bring this absolute  unvarnished honesty, without any veneer of political correctness, you  know?  
And they challenge us, the adults, to wake up, that  this is a real issue, and we have to do something about it.  Their power  is phenomenal.
KINKADE (voice-over):  Lynda Kinkade, CNN, Atlanta.  
(END VIDEOTAPE)
AZUZ:   "Television is a medium of entertainment which permits millions of  people to listen to the same joke at the same time and yet remain 
lonesome", a quote from the poet T.S. Eliot.
Could  the same thing be said about social media?  People join it to get  connected to others, but a new study published in the American Journal  of 
Preventive Medicine has linked increased social media use  to higher levels of perceived social isolation.  In plain English, the  more time people 
spent on sites like Facebook or Twitter or  Tumblr or Vine, the more isolated or lonely they were likely to feel,  according to the study.  
What`s not clear is that people feel  more isolated because of what they`re seeing on social media, or if  people who already feel isolated are spending 
more time on  social media to connect with others.  But the study says that either  way, those feelings of isolation are often associated with sickness, 
weigh or sleep problems.
(MUSIC)
AZUZ:   It was a beautiful setting for a wedding.  A beach in the Philippines  soaked in sunlight.  But the bride and groom were a couple of 
real dogs.  The ceremony was organized by a group of friends, human  friends, who wanted to show other people how important canine companions  
are.  The animals were all dressed in their Sunday best,  though the big outdoor celebration, which included a ceremony and a meal  left at least one 
guest dog tired.
Kind of wonder if  there was a minister or just a veterinarian, and if that person had his  doctor of the-howl-ogy.  Did he pronounce the happy couple 
dog  and wife?  Did they write off in a carriage or a carrier?  Whatever  vehicle it was, we just hope pets were allowed.  If not, they can expect  a 
letter of complaints.  
Do you like wedding puns?  I do!
This is CNN 10.