I`m Carl Azuz, reporting from Atlanta, Georgia, for CNN STUDENT NEWS.

First up this Wednesday, Russian drones over Syria.

We`ve told you before how Russia has been building up

military equipment and troops in Syria.

It seems to be supporting the Syrian government

in the Middle Eastern country's civil war.

That concerns the US because it opposes Syria's government

and wants its president removed.

Russia has started to fly drones, unmanned aircraft there.

US officials say it looks like they're doing surveillance.

They haven't said whether the drones are armed.

Here's where this gets more complicated though.

The US is leading airstrikes against the ISIS terrorist group in Syria.

American officials are now concerned about possible run- ins

between American and Russian aircraft in the skies over Syria.

Next up, Pope Francis, the leader of the Roman Catholic church,

arrived on US soil yesterday.

It's the pontiff's first trip to America.

And when his plane arrived,

President Obama, First Lady Michelle Obama and their daughters,

as well as Vice- President Joe Biden and his family

were there to greet the pope.

He'll be in the US for six days,

traveling to Washington, New York, and Philadelphia

and will give the first ever joint address to Congress by a pope

He's influential and closely watched,

both inside and outside the Catholic Church.

In just over two years,

Pope Francis has shown the world

how the leader of the Catholic Church can be

compassionate, comedic, controversial, and captivating.

Here are some ways the pontiff has surprised us all.

For one, he certainly hasn't been shy about

getting up close and personal with his fans,

from letting someone play with his cap

and giving a pair of school boys a lift in the popemobile

to even posing in a few selfies.

And remember that homily when a young boy walked up on stage

to get a closer look at the pope, even kissing his cross?

But the Pontiff didn't seem to mind.

Several cardinals even tried to persuade the child to leave,

but he refused,

instead wrapping his arms around the pope's legs

and was then allowed to sit in the his chair

while the pope gave a speech.

In another endearing moment,

Pope Francis clowned around with a newlywed couple

and donned a red nose with the bride and groom.

And then there's the humble side of the pope.

At a detention center in Rome,

he washed the feet of two women,

ruffling the feathers of a few traditionalists.

It is written in liturgical law that

only men can take part in the ceremony,

which reenacts Jesus washing the feet of his 12 disciples,

all of whom were men.

In another sign of humility

Pope Francis embraced a disfigured man

suffering from a genetic skin condition known as neurofibromatosis.

That truly powerful image went viral.

Pope Francis has also made moves that have disturbed some conservatives

who believe he's making too many changes, too quickly.

He authorized priests to forgive the sin of abortion

and make it easier and faster to get an annulment.

He issued a papal encyclical about the dangers of climate change,

pleading for global action to help stop it.

In the wake of the attack on Charlie Hebdo,

the pope condemned the violence

but said there are limits to free speech.

Someone says a swear word against my mother,

the pope said, he's going to get a punch in the nose.

And throughout it all,

Pope Francis has earned some interesting titles.

In 2013, Esquire named him their best dressed man.

And Time, gave him the iconic label of Person of the Year.

Rolling Stone also elevated the pope to rock star status

by making him the first religious head to grace the cover

paired with the headline, the times they are a- changin'.

Germany, Hawaii, and Michigan.

Get ready to travel on today's roll call.

Wiesbaden High School. We're shouting out the Warriors today.

Hello to our viewers in Wiesbaden, Germany.

From the Hawaiian Island of Oahu,

say hello to the Rams.

They're watching from Admiral Arthur W.

Radford High School in Honolulu.

And in northern Michigan, Harbor Springs is on today's roll.

Great to see the swordsman of Harbor Light Christian School.

You learn in science that

black holes form when stars collapse

and that they have such incredibly intense gravity

that not even light can escape them.

At least that's the theory.

There is some controversy over whether black holes actually exist.

Some scientists including Stephen Hawking

have said they don't.

Others argue they're mathematically impossible.

Those who disagree with that say that

not only are they real but that two of them are about to collide.

Black holes are some of the strangest and

most mysterious objects in space.

Scientists say they have found new clues

that two black holes might be merging,

a phenomenon some consider the Holy Grail of physics.

NASA says two of its space telescopes have found new information

about an odd repeating light signal coming from

the center of a distant galaxy in the Virgo constellation

about 3. 5 billion light years from Earth.

Researchers say the new data is the best evidence

yet that the light signal is coming from

two super massive black holes,

and that the duo is orbiting closer together

than any pair detected so far.

Scientists were able to track the changing light patterns

over the past 20 years using ultraviolet data

from Hubble and the Galaxy Evolution Explorer.

The two black holes are expected to collide

and merge in less than a million years

triggering a huge explosion.

Why all the interest in black hole mash up?

For the most part, black holes are a huge mystery.

Scientists think there are billions of them in the universe,

but they can't actually see them.

Experts say they can detect gas and other materials

being sucked into the black holes.

In the final moments before they collide,

it's predicted the black holes will cause ripples in space

and time called gravitational waves,

and scientists say those waves could hold clues

about the fabric of our universe.

The Gettysburg Address is one of the most famous

speeches in American history,

but there's no known photograph

of President Lincoln actually giving it.

Why you ask? Well, it's short.

Like ten sentences and 272 words short.

Like two to three minutes short.

Some historians think that because it's so short,

photographers didn't have time to set their cameras to capture it.

Now that's random.

All right, sticking with the Civil War theme.

The CSS Georgia, CSS standing for Confederate States Ship,

served near the southeast Georgia coast.

It never fired a shot in battle.

Confederate troops intentionally sank it

when Union forces approached in late 1864.

A little more than 100 years later,

a dredge ran into the ship's wreckage in the Savannah River.

Now, the US Navy is helping recover a giant relic

of the American Civil War.

We are right now in Savannah, Georgia

to salvage the C. S. S. Georgia.

It's an old Confederate ironclad.

The Georgia has had numerous failed salvage attempts,

so there's no shortage of debris down there

in addition to the Georgia.

We're mobilized here onboard

a Naval Sea System's command support platform

moored out in the middle of the Savannah River.

Anytime you're working underwater

what it really comes down to is feeling your way around,

especially working in zero visibility,

six inches to a foot is a good day.

Right now we're lucky enough

to have the archeologist and underwater sonar device

that could literally pinpoint us

and put us onto any artifact

that they've previously discovered already.

Something we've been saying a lot of is diving into history.

We're actually revisiting the Civil War on every single dive,

and after every dive we actually have a chance

to take a look at some of those things from that period

here on deck and asking the question, what is that.

Even though we don't have plans for the Georgia,

we know a lot about the ship's construction just based on period,

and we've also been relying heavily

on the previous archaeological operations.

The things they found and mapped to guide us in our salvage operation.

Our divers are outfitted with a helmet,

mounted camera and light system,

so we can actually see what they're seeing,

but a little better on the camera topside.

We're also using a variety of sonar technologies

to track our divers movements

and effectively guide them through that debris field on the bottom.

Just about everywhere we step down there

we're walking on some piece of wreckage.

While the debris field is very wide,

I'll say it's very dense.

There are a good number of artifacts on the bottom,

and it's always a new challenge, and really, Georgia,

she doesn't want to give up any of her secrets easily.

Three things you might see in New York city,

pizza, the subway, and rats.

They're generally not seen all at once though,

so it's no surprise this video went viral.

A ravenous rodent recently recorded running

rapidly with a ration of pizza.

The slice was larger than the carrier.

And though we don't actually get to see him

eat his hard- won sample of Subway sustenance,

we can assume he rat- turned for it later on.

Guess when you're a rat, you gotta get carry- out.

Delivery could be a trap.

And now the to- go meal, made us all stop and stares.

Even those with unmistakable mousaphobia rodent

have wanted to miss it.

Rats all folks.

CNN Student News pizzas together another show tomorrow.

It'd be sliced to see y'all then.