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  • With the academic year winding down,

  • we're thankful you're taking ten minutes for CNN student news.

  • I'm Carl Azuz the CNN Center. Officials in the Mediterranean Sea have been searching

  • for the wreckage of EgyptAir Flight 804. Early yesterday morning it was traveling from Paris,

  • France to Cairo, Egypt. It had 66 passengers and crew aboard. When it was over the Mediterranean

  • at cruising altitude, the safest part of the flight, Greek officials say the plane swerved and then

  • plunged and no one knows yet why. Aviation authorities say it could have been some sort of

  • technical failure or it could have been terrorism that brought the plane down. It had just

  • passed from Greek airspace to Egyptian airspace when it dropped off radar. And Egypt, France,

  • Greece, and the US have all sent search vehicles to the crash site. As the recovery mission

  • unfolds and families wait for answers, officials are hoping the plane's

  • Black Box explains what happened.

  • Following a plane crash, the search for survivors always comes first. But just as important

  • is the search for answers. The why and the how. Often, those answers are found in the Black Box.

  • Since the 60s, all commercial airplanes have been required to have one on board.

  • Now, the name is a little misleading because they're actually orange and when we're talking

  • about a Black Box, we're talking about two different boxes. One being the cockpit voice

  • recorder, the other being the flight data recorder. Together, they weigh anywhere

  • between 20 to 30 pounds, and they have to be crash proof. Black Boxes can survive just

  • about anything. Temperatures up to 2, 000 degrees fahrenheit, for an hour. Forces that

  • are 3, 400 Gs, now that's 3, 400 times the force of gravity. They're waterproof and they can

  • save recorded data for two years. And it's a lot of data.

  • The cockpit voice recorder records the crew's conversation and background noise.

  • By listening to the ambient sounds in a cockpit before a crash, experts can determine if a stall

  • took place, the RPMs of the engine, and the speed at which the plane was traveling.

  • When these sounds are cross- referenced with ground control conversations, they can

  • even help searchers locate a crash site. Then there's the flight data recorder. It gathers 25 hours

  • of technical data from airplane sensors, recording several thousand discrete pieces of information,

  • data that the air speed, altitude, pitch, acceleration, roll, fuel, and the list goes on and on.

  • But to make sense of the data, first you have to find it.

  • Not an easy thing to do when a plane crashes into the ocean. Both Black Box components

  • are outfitted with underwater locator beacons, which self activate the moment they come into

  • contact with water. They send pings once per second to signal their location, and can transmit

  • data from as deep as 20, 000 feet for up to 30 days, when their batteries then ran out. But on land,

  • there's no such pinging to help guide the search. Investigators have to sift through the

  • wreckage until they find it.

  • Our roll call schools are picked from one site, cnnstudentnews. com.

  • To make a request, click and comment where it says Roll Call. First up, from the city of Hinton,

  • Iowa, we welcome the Blackhawks. Hinton High School is here. In southwest Maine, on the U. S.

  • Atlantic coast, we come to the city of Saco. Great to see the Trojans of Thornton Academy.

  • And in southeast Asia, in the region of Hong Kong, hello to our viewers at International

  • Christian School. It's hard to find a country in the western hemisphere where the Zika virus

  • isn't spreading. Mosquito's have carried it as far north as the US and as far south as Argentina.

  • It's also reached islands in the western Pacific and eastern Atlantic oceans and

  • the World Health Organization predicts it'll turn up in Europe by late spring. Most people

  • who get Zika won't even notice. Those who do usually have mild symptoms,

  • fever, headache, rash.

  • But Zika can be very dangerous to pregnant women because it's been linked to a birth defect

  • that limits brain development in unborn babies. Now, we're showing you how scientists hunt

  • for the mosquitos that carry Zika in the U. S. territory that's already been affected.

  • Let's see if I can get any mosquitos here.

  • Are you ready to set our first trap?

  • Yeah.

  • Okay. First of course we gotta to do this, right?

  • Bug spray time.

  • Let's look for a nice spot.

  • So do the mosquitoes like to be in the water, or just outside of the water.

  • They'll hang out on the undersides of leaves. They're looking for moist, muddy habitat.

  • There we go.

  • So mosquitoes for Zika would hang out here, and then would go out, and bite people in this town.

  • Or there may be spots in the town itself, that are producing mosquitoes.

  • Wow. This is like mosquito paradise back here. How far can these mosquitoes fly?

  • Like around two miles to look for a blood meal.

  • It's like I can see the mosquitoes here.

  • Yeah.

  • What do mosquitos like about this location?

  • This habitat in particular has lots of pools of water for them to lay their eggs in.

  • And there it goes. You've got the light to catch the mosquitoes, the fan to put them down.

  • Alright.

  • They're moving around in there.

  • We got a few things. There's a mosquito.

  • Boy, full bounty.

  • Just get these guys down.

  • That was a lot of bugs in there, hello trap.

  • My goodness, we got a lot in here.

  • This area is thick with mosquitos.

  • And there's a neighborhood just right over there.

  • Yeah.

  • Kids are playing in a soccer game, and-

  • Yeah, yeah.

  • I mean you see, when you see this, you see how Zika spreads.

  • So there's a mosquito, and there's another one, and there's yet another. They're tiny,

  • they have really long legs, but then they also have a long proboscis, or a long mouth part.

  • And that's where they do their blood sucking?

  • Yeah, it's like a really long straw, essentially, for them, or needle to suck blood.

  • So, there are lots of different kinds of mosquitos. And not all of them spread Zika, right?

  • So, let's check it out and see what kind we got here.

  • These look like Aedes Aegypti to me. Yeah, these are the problem mosquitoes that are

  • spreading Zika. Yeah, and we caught these right next to people's homes.

  • We have these same bugs in the continental United States.

  • There's nothing different about them in terms of their ability to spread the virus.

  • It could lead to the US. They're totally capable of doing the same thing in the Southern

  • US that they're doing here in Puerto Rico.

  • From the it's not every day you see this files.

  • Look, when a moose plays wind chimes, we're going to air it. This happened in Alaska,

  • where you're more likely to find moose. A woman shot the video from her rural cabin

  • near Denali National Park, where there are plenty of moose on the loose.

  • And when the animal wasn't munching on the bottom part of the chimes, it seemed they soothed

  • the savage beast. He was really having a good chime. Who says animals can't be moosical?

  • Maybe he'd prefer Mooszart, or De Moose, or rock moosinal, but just the simple chimes

  • were moosic to his ears. I'm Carl Azuz for CNN's Student Moos, Fridays are awesome.

With the academic year winding down,

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