23/11/2017 Newsround

I'm Hayley, and this is Newsround.

And I've got all this on the way.

Why more lights at night

could be a problem.

And find out what this

huge drill is for.

First this morning,

the new leader of Zimbabwe,

Emmerson Mnangagwa, has urged

the country to unite.

In a speech to a cheering crowd

he praised the army for removing

controversial leader,

President Robert Mugabe,

peacefully earlier this week.

He is the former vice president

of the country and will officially

take control tomorrow.

And if you want to know more

about what's happening in Zimababwe

go to our guide online.

Next, a huge sporting clash begins

today when the best cricketers

from England and Australia

battle it out.

They are all trying to win this very

small but extremely important prize

in a competition called The Ashes.

Want to know more?

Then watch this!

The Ashes is England versus

Australia and it is like 100 years

ago they played, and Australia beat

England and some Australian media

said it was the death of English

cricket and they took the bales that

sit on the stumps and they burned

them and they put the ashes in this

tiny little urn, that is what you

play for. Because of all the hype

and the build-up and the old

rivalry, two win against Australia,

beat Australia, that's the best

thing you can do as an England

cricketer.

Which England players are

you looking for?

Joe Root, one of

the best batsmen in the world right

now, the captain, hoping he will do

well. Alistair Cook was the England

captain and he has played the most

Test matches anyone's played for

England and scored the most runs.

Who are the Australian players to

look out for?

The Australians have

two very good batsmen, David Warner

and Steve Smith, the captain, they

are the ones that England will want

to get out the most.

Who do you

think will win?

England, of course.

Obviously.

Now you know.

OK, time for a quick

round-up of some of

the Champions League action.

This goal in the 89th minute

by Swiss side Basel meant

Manchester United didn't get

the point they needed and instead

have to wait longer to see

if they can book their place

in the next round.

But with a 4-0 win against FK

Qarabag in Azerbaijan,

Chelsea have secured their place

in the last 16 of the tournament.

And even though Celtic were

the first to score in their match

against Paris St-Germain,

the French side ended up

thrashing them 7-1

Images of the Earth by night have

revealed that artificial light,

like that from street lights

and houses is growing brighter

and bigger every year.

Scientists say that this

light pollution could be

bad news for our health

and the lives of animals and plants

as we need the darkness to rest

and natural light to help us grow.

Next, what do you do when you need

to dig a really deep hole?

You bring out the

Vibrocorer of course.

It can drill through water 6000

metres deep and can cut six metres

down. This is the Vibrocorer, and it

means business. Which is just as

well, because the scientists are

drilling deep chunks of the sea bed

around the British Isles. Their

mission is to solve the mystery of

what happened to the ice sheet

covering Britain thousands of years

ago.

We now have the tools at our

disposal to actually put together a

really, really meaningful and

detailed reconstruction of the ice

sheet extent around Britain and

Ireland.

We wanted to find out when

exactly and how the last ice age

ended. And this could help them

predict what could happen to the ice

sheets in the South Pole today. So

the team are using the Vibrocorer to

find clues from the sea bed. The

giant drill is lowered down to the

bottom of the sea and vibrates to

collect along chew or core of rock

and mud. It's then cut up and

brought back to land to be studied

by scientists.

As soon as it is

landed, the scientific party are

desperate to get the sample, and

they disappear into their magic

laboratories.

They are now testing

the samples to find out exactly when

the ice melted and why. They are

hoping that understanding what

happened in the past could help

evict the future for ice sheets on

earth today.

That's all from me for now

but join me at 0815 when I'll be

speaking to the author

of the Jamie Johnson novels!