:00:00. > :00:00.Richy here with some great stories this Saturday.
:00:00. > :00:19.The Cameron Laing robot that changes colour to blend in and the dog that
:00:20. > :00:29.is giving children the confidence to read. -- Chameleon robot.
:00:30. > :00:32.First, a 16-strong young British team is hoping for lots of medals
:00:33. > :00:36.at the second Youth Winter Olympics in Lillehammer.
:00:37. > :00:39.The opening ceremony last night marked the start of 10 days
:00:40. > :00:48.17-year-old athlete George Johnston carried the union flag for Team GB.
:00:49. > :00:53.They're here in Norway to compete in sports as diverse as
:00:54. > :00:56.alpine skiing, curling and the ice hockey skills challenge.
:00:57. > :01:00.One of the names to watch over the course of the next ten days
:01:01. > :01:05.He's 17 and takes part in the one-person mono-bob.
:01:06. > :01:09.Being nominated as the flag bearer by fellow athletes is a real big
:01:10. > :01:15.deal and it's really special to me and I will probably end up
:01:16. > :01:17.treasuring it for the rest of my life.
:01:18. > :01:27.Johnson is one of GB's real medal hopes here in Lillehammer.
:01:28. > :01:29.But medal success is only really part of what these
:01:30. > :01:33.It's hoped that the young people will take with them valuable
:01:34. > :01:36.experience that they can perhaps take to a senior Winter Games
:01:37. > :01:39.Next, this drone and helicopter footage shows the devastation
:01:40. > :01:41.of forest land in Tasmania from huge fires.
:01:42. > :01:43.They were started by lightning strikes
:01:44. > :01:45.and they've been burning for over a month.
:01:46. > :01:47.They show thousand-year-old trees that have been destroyed.
:01:48. > :01:49.Next, you've been getting in touch with us all week about internet
:01:50. > :01:52.safety and whether or not you feel safe when you use your
:01:53. > :01:56.In a survey carried out for Newsround, more than one in five
:01:57. > :01:59.10 to 12-year-olds who use social media said they'd been trolled
:02:00. > :02:03.You've told us bullying is something you're really worried about.
:02:04. > :02:10.So here are our top tips on staying safe online.
:02:11. > :02:12.Most people you meet online just want to chat or game.
:02:13. > :02:17.But there are people out there who lie about who they are
:02:18. > :02:19.and what they want, so it's really important
:02:20. > :02:26.Be really careful with any photos or videos that you share,
:02:27. > :02:31.particularly if they are a bit embarrassing.
:02:32. > :02:33.If you wouldn't want your grandmother or your teachers to see
:02:34. > :02:37.Be really careful what you chat about.
:02:38. > :02:40.No matter how long you have been talking to someone,
:02:41. > :02:42.you really cannot know who they are or what they want,
:02:43. > :02:45.So don't share personal stuff, like your phone number,
:02:46. > :02:49.where you go to school or where you live.
:02:50. > :02:55.Most social networks and apps you use will have privacy settings
:02:56. > :02:58.that enable you to choose what you share and who you share it with.
:02:59. > :03:01.Make sure you only share personal stuff with friends that
:03:02. > :03:09.If anyone puts you under pressure to do anything you don't want to do,
:03:10. > :03:12.or feel uncomfortable with, it is OK to say no.
:03:13. > :03:15.Stop the conversation and go and talk to an adult that you trust.
:03:16. > :03:17.Maybe someone in your family or someone at school.
:03:18. > :03:22.You won't be in trouble and they will be able to help.
:03:23. > :03:25.And, on our website, there is lots of advice and help
:03:26. > :03:27.on what to do if you are being bullied online,
:03:28. > :03:33.This dog is helping give children the confidence to read
:03:34. > :03:37.Fernie can understand short words written on flash cards and studies
:03:38. > :03:40.show that a school dog can calm the environment
:03:41. > :03:48.The teacher says kids read better when they're relaxed.
:03:49. > :03:51.He listens without any judgment, so there isn't an adult telling them
:03:52. > :03:53.they've got it wrong, it's just about the children reading
:03:54. > :03:57.The dog makes no judgment at all and children can see,
:03:58. > :04:00.if the dog can read the flash cards, then they can do it too,
:04:01. > :04:09.It's really amazing that he can read with you.
:04:10. > :04:20.Radio 1 DJ Greg James has raised 750,000
:04:21. > :04:25.after he completed his Gregathlon challenge for Sport Relief.
:04:26. > :04:30.He finished five triathlons in five days in five cities.
:04:31. > :04:32.Ending in Norwich, he thanked everyone who supported him over
:04:33. > :04:42.It's just been the most ludicrous week, so thanks
:04:43. > :04:49.I wouldn't be able to do it without all of you.
:04:50. > :05:03.This clever robot can change colour depending on its background.
:05:04. > :05:05.It's been developed by a Chinese company.
:05:06. > :05:07.The artificially intelligent chameleon is able to work out
:05:08. > :05:11.what colour it's background is and blend in.
:05:12. > :05:13.Finally, this dog has been described by some people
:05:14. > :05:18.But now Tuna, the five-year-old chihuahua cross, has 1.7 million
:05:19. > :05:23.He had his own signing for a new book about him
:05:24. > :05:30.I think what people love about Tuna is his unconventional qualities.
:05:31. > :05:34.He has a very pronounced overbite and a recessed underjaw.
:05:35. > :05:37.But I also think that his personality comes
:05:38. > :05:39.across as endearing and charming and people
:05:40. > :05:50.not just with his photographs, but also with his personality.
:05:51. > :05:56.We'll be back on your TV screens later on this afternoon.
:05:57. > :05:58.Until then, get online to the Newsround websites
:05:59. > :06:00.for all of today's news, pics and quizes too.