:00:00. > :00:09.A warm welcome to your Tuesday afternoon edition of Newsround. On
:00:10. > :00:14.the way: From new fingers to replacing factories. We look at
:00:15. > :00:19.where the 3-D printing revolution could go next. Plus, the surfer
:00:20. > :00:24.braving the world's biggest wave. Keep watching Newsround.
:00:25. > :00:28.Let's start then with an incredible advancement in modern technology -
:00:29. > :00:31.the boy who printed his own hand at home. 12-year-old Leon was born
:00:32. > :00:35.without fingers but his dad couldn't afford a prosthetic hand and so
:00:36. > :00:39.looked for alternatives online. They found a site that explained how to
:00:40. > :00:43.print a 3D moving limb, fitted it to Leon and it's allowed him to pick
:00:44. > :00:47.things up, write and ride a bike at home in America. It's part of a
:00:48. > :00:53.recent wave of more practical uses for printers like this. So Martin's
:00:54. > :00:57.been looking into the life changing possibilities of 3D printing.
:00:58. > :01:02.Robots, portraits, and even mini-models of ourselves. When -D
:01:03. > :01:06.printing first came along it was a bit of fun. But does it really have
:01:07. > :01:10.the potential to change the way the world works? The possibilities are
:01:11. > :01:13.limitless really. 3-D world works? The possibilities are
:01:14. > :01:17.the early stages. Already world works? The possibilities are
:01:18. > :01:23.building houses. You have prosthetic limbs. It's lots of potential. As
:01:24. > :01:33.technology's advanced, scientists have started to develop 3-D ways to
:01:34. > :01:37.change lives. Even save lives with prototypes for arms, and even
:01:38. > :01:41.bladers. It's not just developments in health that have people excited.
:01:42. > :01:49.Where once it took big factories for companies to make things... You can
:01:50. > :01:54.do it all yourself with a relatively simple, I hope, machine. I think
:01:55. > :01:57.eventually it will completely transform the way products are made.
:01:58. > :02:05.Whilst the possibilities are there, how long before making it happen on
:02:06. > :02:09.a mass scale is a reality? It won't take over all of manufacturing. But
:02:10. > :02:14.it will be something that people use in the future. But there are
:02:15. > :02:19.concerns. A group in America have printed a 3-D gun, leading to
:02:20. > :02:22.questions about the dangers of anyone being able to print anything
:02:23. > :02:26.they want without any rules. The chances of reliable, fast and cheap
:02:27. > :02:31.3-D printing being available to us all is some way off, but the vision
:02:32. > :02:38.of what it could do in the future is already here.
:02:39. > :02:43.Thanks, Martin. From 3-D to One D. It's been announced the boys will
:02:44. > :02:48.perform at this year's Children in Need live show, they'll sing on
:02:49. > :02:52.November 15th and you can watch a Dr Who special and Ellie Goulding
:02:53. > :02:57.singing this year's single for Children in Need.
:02:58. > :03:00.Next, to the first ever tunnel to connect two continents. A railway
:03:01. > :03:03.line running under the sea between Europe and Asia has opened today in
:03:04. > :03:07.Istanbul, Turkey. The idea is 1 0 years old but has only just been
:03:08. > :03:10.made possible. Specially designed to withstand earthquakes, the tunnel is
:03:11. > :03:14.the deepest of its kind in the world - more than 60 metres below ground.
:03:15. > :03:17.It's expected to carry a million passengers a day and improve trade
:03:18. > :03:24.between businesses in Europe and China.
:03:25. > :03:27.Next to the question of whether there should be more people with
:03:28. > :03:31.Down's Syndrome on your TV screens. Ruben's one of the stars of CBBC's
:03:32. > :03:40."My Life" and one of the 750 UK kids born with the condition each year.
:03:41. > :03:43.For a special Newsround report he's been asking why there aren't more
:03:44. > :03:49.people like him on our screens. People sometimes think that people
:03:50. > :03:54.like me with Down's Syndrome are different. I think if there were
:03:55. > :04:03.more people with Down's Syndrome on TV, then people would realise we are
:04:04. > :04:09.not that different. One place you hardly ever see people like me is in
:04:10. > :04:18.adverts. I think this is wrong! I have come to Bath to meet my mate
:04:19. > :04:21.Seb who was in an advert for Marks Spencer. Last year we went shopping
:04:22. > :04:27.for a school uniform and we realised that the back to school campaign
:04:28. > :04:31.didn't represent anyone with additional needs. He was brought to
:04:32. > :04:36.attention by his mother who posted a letter to us on his Facebook site.
:04:37. > :04:44.Seb completely wowed us. That was really, really good. Finally, to
:04:45. > :04:47.what could be the biggest wave anyone's ever surfed. Certainly the
:04:48. > :04:50.biggest one I've ever seen. This is Brazilian Carlos Burle, tackling the
:04:51. > :04:54.monster surf in Nazare, Portugal. It could break the world record mark of
:04:55. > :04:58.30 metres high. He did it all to save his mate, too. What a hero
:04:59. > :05:00.That's it from me. Newsround is back this evening. See you later.