29/10/2013 Newsround

A warm welcome to your Tuesday afternoon edition of Newsround. On

the way: From new fingers to replacing factories. We look at

where the 3-D printing revolution could go next. Plus, the surfer

braving the world's biggest wave. Keep watching Newsround.

Let's start then with an incredible advancement in modern technology -

the boy who printed his own hand at home. 12-year-old Leon was born

without fingers but his dad couldn't afford a prosthetic hand and so

looked for alternatives online. They found a site that explained how to

print a 3D moving limb, fitted it to Leon and it's allowed him to pick

things up, write and ride a bike at home in America. It's part of a

recent wave of more practical uses for printers like this. So Martin's

been looking into the life changing possibilities of 3D printing.

Robots, portraits, and even mini-models of ourselves. When -D

printing first came along it was a bit of fun. But does it really have

the potential to change the way the world works? The possibilities are

limitless really. 3-D world works? The possibilities are

the early stages. Already world works? The possibilities are

building houses. You have prosthetic limbs. It's lots of potential. As

technology's advanced, scientists have started to develop 3-D ways to

change lives. Even save lives with prototypes for arms, and even

bladers. It's not just developments in health that have people excited.

Where once it took big factories for companies to make things... You can

do it all yourself with a relatively simple, I hope, machine. I think

eventually it will completely transform the way products are made.

Whilst the possibilities are there, how long before making it happen on

a mass scale is a reality? It won't take over all of manufacturing. But

it will be something that people use in the future. But there are

concerns. A group in America have printed a 3-D gun, leading to

questions about the dangers of anyone being able to print anything

they want without any rules. The chances of reliable, fast and cheap

3-D printing being available to us all is some way off, but the vision

of what it could do in the future is already here.

Thanks, Martin. From 3-D to One D. It's been announced the boys will

perform at this year's Children in Need live show, they'll sing on

November 15th and you can watch a Dr Who special and Ellie Goulding

singing this year's single for Children in Need.

Next, to the first ever tunnel to connect two continents. A railway

line running under the sea between Europe and Asia has opened today in

Istanbul, Turkey. The idea is 1 0 years old but has only just been

made possible. Specially designed to withstand earthquakes, the tunnel is

the deepest of its kind in the world - more than 60 metres below ground.

It's expected to carry a million passengers a day and improve trade

between businesses in Europe and China.

Next to the question of whether there should be more people with

Down's Syndrome on your TV screens. Ruben's one of the stars of CBBC's

"My Life" and one of the 750 UK kids born with the condition each year.

For a special Newsround report he's been asking why there aren't more

people like him on our screens. People sometimes think that people

like me with Down's Syndrome are different. I think if there were

more people with Down's Syndrome on TV, then people would realise we are

not that different. One place you hardly ever see people like me is in

adverts. I think this is wrong! I have come to Bath to meet my mate

Seb who was in an advert for Marks Spencer. Last year we went shopping

for a school uniform and we realised that the back to school campaign

didn't represent anyone with additional needs. He was brought to

attention by his mother who posted a letter to us on his Facebook site.

Seb completely wowed us. That was really, really good. Finally, to

what could be the biggest wave anyone's ever surfed. Certainly the

biggest one I've ever seen. This is Brazilian Carlos Burle, tackling the

monster surf in Nazare, Portugal. It could break the world record mark of

30 metres high. He did it all to save his mate, too. What a hero

That's it from me. Newsround is back this evening. See you later.