06/05/2014 Newsround

Good morning. Leah here with your morning Newsround, with news of

Liverpool's agony as their Premier League hopes slipped away last

night. We will be heading in a tunnel deep undersea for a birthday

celebration. And if you thought snooker was

boring, think again - this is how they celebrate!

But first - an international group of doctors has warned the spread of

the very serious disease, polio, has become a global health emergency.

Polio worst affects young children, but it can be prevented with a

simple vaccine and is almost never found in this country. It had been

virtually stamped out worldwide, but countries like Pakistan and

Afghanistan have seen rises in recent years. Now the World Health

Organisation is calling for urgent action by the governments of these

countries to use vaccines and stop the disease in its tracks.

If this situation right now is not addressed, one of the deadliest

diseases in history has the opportunity to resurge and we could

lose the opportunity to eradicate this disease.

To sport, and Liverpool saw their Premier League title hopes dashed

last night as they allowed a 3-0 lead over Crystal Palace to slip

away. Liverpool's players and fans were left distraught after Palace

scored three times in the last 11 minutes to draw 3-3 - leaving Luis

Suarez in tears at the final whistle. Liverpool boss Brendan

Rodgers says his side's dreams of winning the league are over.

You have got to have that maturity and management in the game to see it

through, and we didn't do that. As I said, it was bitterly disappointing.

Manchester City have two home games and I would expect them to go and

win it now. If you've got any of these players

among your football cards then you've probably got a strong set.

With the World Cup starting next month lots of you are busy swapping

these, but getting hold of the best ones can sometimes be frustrating!

So Ricky's been to the City of London on the hunt for some tips

from the experts. The City of London, home to some of

the world's biggest banks. Every day, these men and women buy and

sell all kinds of things to make money for themselves and the massive

companies they work for. Getting the right deal can make or break a City

trader. The trading floor might look like a very frantic and chaotic

place but it is basically a group of people who are buying and selling

different things, from currencies to oil, coal, gold and other metals. To

be good at it, you have got to be one step ahead of the game. This

kind of trading might be a world away from what you get up to in the

playground, but there are some similarities. I have come here to

find out what it takes to be a top trader in town but more importantly,

in the playground. First of all, do your research, know your market,

know what cards are out there, what are the good cards, what are the not

so good cards, what are their strengths and weaknesses. We have

Wayne Rooney here, what can I do to make sure I get the best card in

return for this? You need to get these desperate buyers together and

create a bit of an auction. Create a bit of excitement, get a bidding war

going on in the playground, maybe. "So, I have got Wayne Rooney, what

are you prepared to bid for Wayne Rooney," and get them competing

against each other. And remember, think before you swap, don't do

something you might later regret. Sometimes you need to sleep on a

decision. Things might look very different in the morning. There you

have it, some top tips on how to be the perfect card trader. I have some

work to do. Buy! Sell! What do you mean, wrong number?

Now if you thought the game of snooker was a quiet affair - it

really isn't. That was the moment Mark Selby beat Ronnie O'Sullivan to

become World Champion last night after a fantastic comeback. The

crowds went wild. Afterwards, he dedicated his win to his father.

When the going gets tough towards the end I thought I played really

well. My father passed away when I was 16, before I turned

professional. I always said to him I would try to win the World

Championships one day and today it has come.

And last up - it's considered one of the most impressive feats of

engineering in the world - a tunnel that stretches 30 miles under the

sea, linking Britain with the rest of Europe. The Channel Tunnel is 20

years old today. This was the moment back in 1990 when the two tunnelling

teams met in the middle - the tunnel was made by drilling out huge

amounts of rock from either end. Now the trains carry 20 million people

between England and France every year.

That's all from me, Newsround's back this afternoon.