:00:17. > :00:21.Hello there. Ore and Sonali with you tonight, with all the very
:00:21. > :00:26.latest news from across the world. Here are a couple of things we've
:00:26. > :00:32.got lined up for you... Leah photocopies her own head... And
:00:32. > :00:38.find out why these large creatures are facing big problems. All that
:00:38. > :00:40.to come, but first we're heading to Libya, in North Africa. After
:00:40. > :00:45.months of fighting it looks like the country's leader, Colonel
:00:45. > :00:48.Gaddafi, is about to be overthrown. He's been in power there for more
:00:48. > :00:50.than 40 years, but lots of Libyans want him out. Overnight, rebels who
:00:50. > :00:56.don't want Gaddafi ruling the country stormed the capital city,
:00:56. > :01:04.Tripoli. These have been the scenes there today. Celebrations on the
:01:04. > :01:07.streets, but the fighting is still For these Libyans, the last six
:01:07. > :01:10.months of fighting have been building up to this - their chance
:01:10. > :01:16.to take control of the capital city and topple their leader, Colonel
:01:16. > :01:18.Gaddafi. The fighting began in February. Libya's neighbouring
:01:18. > :01:23.countries Tunisia and Egypt also had unpopular leaders, but the
:01:23. > :01:26.people there rose up, rallied together and forced them out. Many
:01:26. > :01:30.Libyans saw what had happened and wanted to do the same to Colonel
:01:30. > :01:34.Gaddafi. During his years in power, Gaddafi has put people who disagree
:01:34. > :01:39.with his views in prison and sometimes had them killed. Gaddafi
:01:39. > :01:41.refused to go and tried to stop people protesting against him. In
:01:41. > :01:45.March, several countries including Britain and America sent planes
:01:45. > :01:49.into Libya to bomb government tanks and planes to try to stop Gaddafi
:01:49. > :01:52.attacking his own people. The fighting continued throughout the
:01:52. > :02:02.summer, and then this weekend, it became even more intense as the
:02:02. > :02:04.
:02:04. > :02:07.rebels advanced towards the capital. It's really dangerous. This BBC
:02:07. > :02:09.reporter came under fire from Gaddafi supporters as he travelled
:02:09. > :02:12.with rebel fighters. The British Prime Minister, David Cameron,
:02:12. > :02:19.returned from holiday early because of what's happening and says it was
:02:19. > :02:22.right for Britain to get involved in the fighting.
:02:22. > :02:27.It was necessary because Gaddafi was going to slaughter his own
:02:27. > :02:30.people. That massacre of innocent people was prevented. Although
:02:30. > :02:34.there are Libyans who say they're ready to form a new government, no-
:02:34. > :02:38.one is really sure what's going to happen next. But for the time being,
:02:38. > :02:41.these people are just glad that it looks like change is happening. Two
:02:41. > :02:44.of Colonel Gaddafi's sons have now been captured by the rebels but
:02:44. > :02:51.Gaddafi himself has gone into hiding. Fighting is still going on.
:02:51. > :02:55.Head to our website for all the Next to a big problem facing rhinos
:02:55. > :02:58.in Africa. More and more of them are being hunted and killed for
:02:58. > :03:02.their horns. Just listen to these numbers - four years ago in South
:03:02. > :03:07.Africa, 13 were killed by poachers. That number rose to 300 last year.
:03:07. > :03:13.Poaching rhinos is illegal. The UK is now heading up a campaign to get
:03:13. > :03:19.other countries to help stop it. There are five species of rhino in
:03:19. > :03:22.There are five species of rhino in the world. Four of them are
:03:22. > :03:31.officially under threat of extinction. That's because more and
:03:31. > :03:34.more rhinos are being killed for their horns every year. So far this
:03:34. > :03:37.year more than 200 rhinos have been poached in South Africa. It's all
:03:37. > :03:41.because of a myth that has spread through Asian countries that says
:03:41. > :03:44.rhino horns can be used as medicine to cure cancer. It's not true, and
:03:44. > :03:47.scientists all agree that rhino horns can't help humans. But the
:03:47. > :03:51.belief that they're a cure for cancer has made people want to buy
:03:51. > :03:54.them. They're in such huge demand that they're now worth �50,000 a
:03:54. > :03:57.kilogram - that's more than diamonds and gold. Getting so much
:03:57. > :04:01.money for selling the horns means poachers don't want to stop hunting
:04:01. > :04:05.the animals. Even in the UK, burglars have stolen rhino horns
:04:05. > :04:08.from museums to make cash. So now the British Government is asking
:04:08. > :04:14.China, Vietnam and other Asian countries to tell their citizens
:04:14. > :04:17.that rhino horn isn't a medicine. Rhino horns are made of something
:04:17. > :04:22.called keratin, which is the same stuff that's in our hair and our
:04:22. > :04:25.fingernails. The UK Wildlife Minister is hoping if this is
:04:25. > :04:28.explained to people in Asia, they won't buy rhino horn illegally, and
:04:28. > :04:38.that will help stop the poaching that could very soon wipe out these
:04:38. > :04:39.
:04:39. > :04:42.Next we're talking technology in a new dimension. We've had 3D movies,
:04:42. > :04:52.we've had 3D TV. But now, make way for... 3D printers! It's what we've
:04:52. > :04:58.all been waiting for! Well, Leah has been anyway! Printers are not
:04:59. > :05:04.usually very exciting. But that's all changing. At this design
:05:04. > :05:10.college, they're using 3D technology to print drawings as
:05:10. > :05:16.real-life objects. First of all, we come along with this model, which
:05:16. > :05:22.we draw up in the commuter, -- computer, and then withdraw it up
:05:22. > :05:28.in the machine. It works layer by layer. The platform burns down and
:05:28. > :05:32.builds up another layer. Eventually we have the whole thing.
:05:32. > :05:36.printing can be used to make anything from midi models for
:05:36. > :05:43.architects to medical supplies. The idea is that one day you will be
:05:43. > :05:46.able to print off toys, jewellery and even mobile phone accessories.
:05:46. > :05:51.Time to see it in action. This camera takes loads of pictures of
:05:51. > :06:01.my head. They're then fed into a computer to build up a 3D image
:06:01. > :06:02.
:06:02. > :06:06.which can be printed out. It is as easy as that. Hundreds of layers of
:06:06. > :06:10.fine powder are built up to make the finished model. But printing a
:06:11. > :06:15.3D image of yourself takes quite a lot of time. You can buy personal
:06:15. > :06:19.3D printers. They're very expensive, but the technology is changing
:06:19. > :06:29.quickly, so they could be more widely available in the next few
:06:29. > :06:29.
:06:29. > :06:34.years. And here it is full stop I would say that's weird. And why
:06:34. > :06:44.didn't they make her have a happier face? That's a lot to get your head
:06:44. > :06:48.around. If you thought Blue Peter's Helen Skelton was a daredevil, you
:06:48. > :06:51.ain't seen nothing yet! A Swiss man has broken the world record for the
:06:51. > :06:53.longest and highest ever tightrope walk without a balancing pole. With
:06:53. > :06:58.no security harnesses at all, Freddy Nock walked almost a
:06:58. > :07:01.kilometre up this 2" cable car rope in Germany. And we can't go without
:07:01. > :07:04.gloating in the glory of England totally thrashing India in the
:07:04. > :07:07.cricket. The number one Test team in the world - feels good to say
:07:07. > :07:10.that - are celebrating a series whitewash over India after winning
:07:10. > :07:13.the final Test by an innings this afternoon. India did show some