and I'll be taking you through the next ten minutes

of current events on CNN Student News.

It starts with US and global stock markets.

Averages have been swinging up and down wildly in 2016.

Last week the Dow Jones Industrial Average got off

to its worst ever start of the year.

It took another dive earlier this week,

but gained some of those losses back yesterday.

One of the biggest reasons for the instability is fear.

A popular saying is that Wall Street is governed by the emotions of fear and greed.

When investors are afraid, they sell off stock shares

and that drives down the market.

So what is causing all of this anxiety?

This is what a crash looks like,

an oil market collapsed from $ 180 to 30 in just 18 months.

To levels not seen since 2003.

Where's the bottom, Morgan Stanley says $ 20,

RVS says 16, standard charter 10.

It's a boon for drivers, it acts as a tax break for consumers.

But the force of the decline, so far, so fast

is destabilizing brining economic crisis to oil producers like Saudi Arabia,

Venezuela, Russia, Nigeria, Iraq.

Pink slips for energy workers and potential bankruptcy for oil companies.

Four reasons why this is happening.

First, OPEC won't cut production.

The world's largest oil producers are holding out to

see if other smaller producers will slow the pumps,

hoping they can gain or keep their market share in the long run.

But it's costing them billions, and Iran is about to start selling oil too.

Second, China is spooking everyone,

the world's second largest economy is slowing.

It needs less fuel to run its economy,

and the emerging market would be less as well.

Third, The US is producing more oil than ever,

largely created by American shale oil boom.

And this plunge in prices hasn't shut out too many producers yet.

And finally, the US dollar is strong, crude oil trades in dollars,

that means when the dollar gets stronger,

oil gets more expensive for over seas buyers.

That hurts demand and drive prices down further.

Mourning and defiance stretched across Indonesia yesterday.

The island chains between the Indian and Pacific oceans

with 256 million people, it's the fifth most populated nation in the world

And the largest Muslim majority country.

Yesterday, in the capital of Jakarta,

terrorists using explosives and firearms targeted an area often visited by foreigners.

At least two people were killed and 19 were wounded.

Indonesian authorities place the blame on the ISIS terrorist group,

and ISIS later claimed responsibility in an online statement.

This happened two days after a bombing Istanbul,

the largest city in Turkey, formerly named Constantinople.

ISIS was blamed for that too,

a suicide bombing that killed ten visiting Germans.

Turkey's prime minister said his country would continue its fight

against terrorism and never take a step back.

Turkey's a nation at a crossroads in more ways than

its geographical location between Europe and Asia.

Turkey faces a host of challenges that are likely to make 2016 a very difficult year.

The government is simultaneously fighting

Kurdish militants from the Kurdistan Workers Party or PKK

as well as ISIS militants.

Score of people have died as a result of the Kurdish fighting

over the course of the last several months,

and ISIS militants and suicide bombers are believed to have killed

around 130 Turkish citizens in a series of suicide bombings

in six months alone at the end of 2015.

These civil war in neighboring Syria continues to spill over.

Turkey's policy of accepting more than a million Syrian refugees

has been incredibly generous, but it has also changed

the demographics of Turkish cities and towns.

There are now homeless Syrians struggling to eke out a living.

Turkey's multi billion dollar tourism industry,

which makes up a significant part of the entire economy

has suffered several blows.

An important trading partner Russia has called for boycott

of Turkish beaches and goods.

After Turkish war planes shot down a Russian bomber

operating along the Turkish- Syrian border in November of 2015.

That is likely to strike a major blown to the Turkish economy.

A suicide bomber of suspected Syrian origin

has struck the jewel of the Turkish tourism industry.

The ancient district of Sultanahmet in what was

the heart of the ancient city of Constantinople

and now one of the most frequented tourist destinations in all of Turkey.

And amid the many challenges Turkey faces,

it is perhaps more politically polarized than ever.

With a population divided between those who love

and those who loath Recep Tayyip Erdogan, the current president of Turkey.

A man who has dominated the political scene

in this country for some 14 years.

All right, let's take role, now announcing three of the schools online this Friday.

From Westphalia, Missouri, please welcome the Bulldogs.

Thank you for watching form St. Joseph Catholic School.

Chiefess Kamakahelei Middle School,

is with us today, they're mascot the Pueo, their location

Lihue on the Hawaiian island of Kauai.

And crossing southwest in the Pacific Ocean

we come to Kincoppal- Rose Bay, Sydney, Australia,

is home to the School of the Sacred Heart.

At what age is the human brain fully developed?

It's probably older that you think.

Many experts say it's older than psychologists used to think.

While the legal age of adulthood in the U. S. is 18 years,

it seems the brain's ability to make well thought out decisions

may not be set until ten years after that.

And once it's there, you have to keep learning to keep it there.

Let's say this is the adolescent brain,

It grew to this size by around age five or six.

But that doesn't mean it's fully built.

Think of it instead like a house that's been framed

but now needs the interior insulated.

Our cells have a natural insulation called myelin.

Brain cells have to build it and that takes years.

In fact, the brain isn't fully myelinated and mature

until sometime in the late 20s.

And here is the thing, this maturation begins at the back of the brain

and moves forward with the very last part of the brain to be fully connected and functional,

being the frontal cortex.

The very part of our brain that is our voice of reason

where we control our impulses and risk taking behavior.

That develops last, even before puberty starts the preteen brain

is growing grey matter right here in the cortex.

That's at the highest rate since babyhood,

the cortex is where thought and memory are based.

That gives the preteen brain lots of synapses to use

or lose and lose they will, if they don't use it.

The brain makes itself more efficient by cutting off those pathways

that aren't being developed. So think about it,

if you're learning a new sport or a musical instrument,

your brain is gonna save and keep those abilities.

But if you're being a couch potato in front of the television, you get the idea.

Before we go, a magnificent merging of music, luminance and technology.

The players, 100 drones, people in machines to control them.

One serious orchestra, and space in the sky near the German city of Hamburg.

Computer sync the lights on the drones to the movement of the music.

Its set a Guinness world of record for most drones in the sky

at once and light up the night Beethoven never

would ever imagined when composing his fifth symphony.

Not hard to see the highs and low notes in that performance.

And if we can float a few ideas for next time,

they might consider WC's Claire de Drone,

Strauss's Blue Dronube, Bach's Brendroneburg concertos,

Brahm's Hungarian Drones or Mozart's magic flight,

we could drone on and on, that's CNN student news.