:00:00. > :00:00.Hi, I'm Ricky, it's Friday and you are live
:00:00. > :00:12.How a fly's eyes make it a deadly hunter.
:00:13. > :00:17.The new 3D printed hand built at a school.
:00:18. > :00:26.And the elephant getting shiny new tusks.
:00:27. > :00:29.First up, football - and this weekend it's
:00:30. > :00:34.And taking on the mighty Arsenal, are non-league Lincoln City,
:00:35. > :00:37.who made it through thanks to a dramatic last-minute winner
:00:38. > :00:50.ALL: We all play for Lincoln Academy.
:00:51. > :00:56.COMMENTATOR: One last chance for the Lincoln
:00:57. > :01:05.Sam Habergham will sweep this in left-footed.
:01:06. > :01:07.To the far stick it goes, headed back across goal!
:01:08. > :01:15.And Lincoln City, of non-league football,
:01:16. > :01:18.of the National League, take the lead at Premier League
:01:19. > :01:29.It's the first time ever in our history that we've got
:01:30. > :01:32.People around Lincoln are really excited for
:01:33. > :01:36.It's really inspired me because Lincoln have just made
:01:37. > :01:40.everybody try harder and work harder because you know
:01:41. > :01:45.If we got through to the semifinals it would be
:01:46. > :01:53.They'll do well if they scored, and if they won it would be amazing.
:01:54. > :01:57.I think Arsenal need to watch out for Matt Rhead and Nathan Arnold.
:01:58. > :02:00.I think Matt Rhead will bully their defence and Nathan Arnold
:02:01. > :02:07.I'm a bit worried of what Sanchez and Ozil can do because they're
:02:08. > :02:10.I really want to play for Lincoln when I'm older.
:02:11. > :02:13.Watching this FA Cup has been amazing, it's really inspired me.
:02:14. > :02:19.I predict 2-0 Lincoln, Matt Rhead and Luke Waterfall to score.
:02:20. > :02:29.COMMENTATOR: This is the first time in 103 years that the FA Cup has
:02:30. > :02:35.You can do it in the quarterfinals against Arsenal.
:02:36. > :02:38.Good luck, Lincoln, I hope you win against Arsenal.
:02:39. > :02:50.Next to the Great Barrier Reef, off the coast
:02:51. > :02:54.It's the largest living thing on earth, and even
:02:55. > :02:57.But scientists say it has been hit by widespread bleaching
:02:58. > :03:00.of its corals for the second year in a row.
:03:01. > :03:02.The first aerial survey of 2017 shows large areas
:03:03. > :03:06.of the reef have been damaged by high water temperatures.
:03:07. > :03:12.Experts say they're worried about the reef's long-term health.
:03:13. > :03:20.Now to the 3D printed hand which has been made at a school.
:03:21. > :03:23.It's for 5-year-old Andrew - he was born
:03:24. > :03:26.with a condition which means one of his hands is smaller and less
:03:27. > :03:29.It will help him grip things more easily.
:03:30. > :03:32.The hand was made at a school which is the only one in the UK
:03:33. > :03:41.Andrew 's parents said handle make a real difference to him. He does
:03:42. > :03:47.adapt quite well and cope quite well as it is. It's little things that
:03:48. > :03:49.will just improve him, like holding a bottle, using his hand puddings,
:03:50. > :03:52.it will benefit him, it? Yes. I do enjoy helping people,
:03:53. > :03:55.and I think this is something that really would leave a big impact
:03:56. > :03:57.on his life. It's also good for us
:03:58. > :04:00.because we can learn more We want to give him
:04:01. > :04:05.the opportunities that he should be Next up, the scientists getting
:04:06. > :04:15.a fly's-eye view of the world. This insect has some pretty
:04:16. > :04:18.impressive eyes and researchers have been finding out how they help them
:04:19. > :04:22.to be so good at hunting. This tiny robber fly is the size
:04:23. > :04:26.of a grain of rice but can pinpoint It locks onto its target
:04:27. > :04:35.in less than a second. It's all down to the
:04:36. > :04:37.robber fly's eyes. They have large lenses and a lot
:04:38. > :04:41.of really tiny sensors which allow them to spot and lock
:04:42. > :04:44.onto their prey. In fact, the small fly has
:04:45. > :04:51.the same detail of vision Researchers used high-speed cameras
:04:52. > :04:57.to show how the fly positions itself to capture moving prey,
:04:58. > :05:00.and found out that the fly keeps its victim in its line
:05:01. > :05:04.of sight the whole time. The next step for scientists
:05:05. > :05:07.is to find how the fly's brain takes this information and turns it
:05:08. > :05:15.into action in the blink of an eye. Next, this is the world's rarest
:05:16. > :05:18.stamp and it's worth The one-cent Magenta stamp
:05:19. > :05:23.was printed in the south American country of Guyana
:05:24. > :05:28.more than 150 years ago. The world's most valuable stamp
:05:29. > :05:31.will now go on display at the National Postal Museum
:05:32. > :05:34.in the United States. Last up, meet this
:05:35. > :05:37.13-year-old elephant. He lives in a zoo in
:05:38. > :05:39.California in the US. He's just been fitted with these
:05:40. > :05:44.special shiny brass caps to cover The elephant's tusks were cracked
:05:45. > :05:48.so these new caps will hopefully That's all from me, Newsround's back
:05:49. > :05:59.at 4.20pm this afternoon.