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.