21/03/2018 Newsround

Hi, I'm Ayshah and this is your

Wednesday afternoon Newsround.

First, if you've ever shared,

liked or commented on something

on social media, you might

want to know about this next story.

We might not think about it much,

but everything we do online builds

up a picture of our personalities.

For example who we're friends

with on social media

and when we comment,

like or share something.

Social media companies use this

information to make money ?

they sell it to companies

who want to know what we might

want to buy next, where we might

want to go on the weekend,

or even what new TV shows

we might want to watch.

It's is a big story right now

because people are wondering

whether this information might have

helped Donald Trump get elected

President of the US.

Ok, it might all sound a bit

weird, but bear with us.

Knowing someone's personality,

what they like and what they don't

like, might tell us more about them

? including, for adults,

how they might vote in an election.

And that might help politicians work

out how to target particular

voters over social media.

Now it's claimed that a company

called Cambridge Analytica used

information from a Facebook

personality quiz to find out

about the personalities of thousands

of people who took the quiz.

They also got info on millions

of their online friends as well.

And it's also been claimed

that Cambridge Analytica

used this information

about their personalities

without their permission to help

the campaigns of politicians,

including Donald Trump.

But there are rules which mean

companies like this should be very

careful about what they do

with our information.

The claims about Cambridge Analytica

and Facebook are now

being investigated.

Cambridge Analytica says it didn't

do anything wrong and it only uses

information which has been taken

legally and fairly.

Facebook says it's made changes

to try and stop this happening again

and is also carrying

out its own investigation.

The superstars of the Winter

Paralympics, Menna Fitzpatrick

and her guide Jen Kehoe,

have conquered the mountains

of South Korea.

But can they take

on our super tough quiz?

BOTH: Oh...

I don't know.

That is tough.

Disney features quite a lot.

She's definitely in bed

earlier than I am.

She doesn't believe she snores,

but I've actually got the dual

recording a person ordering.

-- video recording of her snoring.

Oh, I don't know.

I don't think we've seen each

other dance that much.

No.

Possibly.

No.

In absence of a sensible answer,

I'm going to back myself!

Both pretty even.

I wouldn't like to commit.

I'd say both of us.

She follows me,

I think that's brave.

So after our super tough quiz,

is there anything they didn't

know about each other?

It's thrown up that we need

to go dancing together.

Yeah.

Next, it's been a big day

for this little guy...

The first polar bear to be born

in the UK in 25 years made its first

public appearance today.

The cute cub lives at

the Royal Zoological Society's

Highland Wildlife Park in Scotland.

After spending the first four months

of its life in private with its mum,

the time has come for it to venture

out of the den and explore.

So sweet!

Head online for loads

more from Newsround,

including a sporting disagreement

with a difference.

Are tennis balls yellow

or are they green?

We know what tennis ace

Roger Federer thinks!

But we want to get your

view so let us know.

Well, clearly it's green! Look at

this massive thing! I'm in trouble!

Finally, if you had a rough

day at school today,

spare a thought for the guys

who made the mistake

that caused this mess...

This spewing fountain of water burst

through a major road in the US,

stopping traffic for several hours.

The plume of water was

several metres high.

It happened after a water

pipe was damaged.

What a clean-up job

that will have been!

That's all for today.

Newsround's back in the morning.

Have a good one!