:00:00. > :00:08.Ayshah here with the people who've been living under water
:00:09. > :00:12.We've got the schoolgirl weightlifter heading
:00:13. > :00:17.to the Commonwealth Games live in the studio.
:00:18. > :00:20.But, first, to the major dust storms hitting parts of America.
:00:21. > :00:23.The US State of Oklahoma is being affected by huge walls of dust
:00:24. > :00:26.that are destroying crops and could drive people out of their houses.
:00:27. > :00:29.The area is in the middle of a three year drought
:00:30. > :00:33.and the storms are being caused by high winds picking up dry soil
:00:34. > :00:38.Now to the Yorkshire schoolgirl who's
:00:39. > :00:42.raising the bar, quite literally, in the world of weightlifting.
:00:43. > :00:44.15-year-old Rebekah Tiler is the youngest ever athlete to win
:00:45. > :00:47.gold at the British Weightlifting Championships.
:00:48. > :00:51.Not only that, she's broken more than 100 British records and she's
:00:52. > :00:54.preparing for the Commonwealth Games later this month.
:00:55. > :00:58.We'll speak to Rebekah in a moment but let's take a look
:00:59. > :01:36.Gold medal 2014! Welcome to the studio. You have just seen when you
:01:37. > :01:51.won the title. That was against the seniors. How did you get to be so
:01:52. > :01:59.strong? I got tested. Full. -- I got tested for strength. I had weights
:02:00. > :02:06.that were 50 kilograms. Now you can lift 123 kilograms. That is to me,
:02:07. > :02:12.basically. How do you train and go about it? I train five times a week.
:02:13. > :02:20.I have to stick to a pretty good diet. Chicken, steak, lots of
:02:21. > :02:26.vegetables. Why W also have three sisters as well who have been
:02:27. > :02:36.inspired by what you have done. -- you also have three sisters. They
:02:37. > :02:41.all do weightlifting and they are British champions as well. You can
:02:42. > :02:47.feel the weight but it does not hurt. How did you manage to get so
:02:48. > :02:56.strong? I did some body-building with my dad. Sprinting down the
:02:57. > :03:00.track with weights, it has built my strength up. Why do you have the
:03:01. > :03:05.Commonwealth Games in July. How much are you looking forward to that? It
:03:06. > :03:18.will be really good, a good experience. The butcher has tickets!
:03:19. > :03:20.Thank you very much for coming in. And also for being so strong. Best
:03:21. > :03:24.of luck to you. But it wasn't to be for Andy Murray,
:03:25. > :03:26.who crashed The defending champion was beaten
:03:27. > :03:29.in straight sets by Bulgarian Gregor Dimitrov
:03:30. > :03:31.after making lots of errors. He says he enjoyed his time as
:03:32. > :03:35.champion and will be back next year. Seven- time champion Roger Federer
:03:36. > :03:37.is through to the semis after beating Australian Open champ
:03:38. > :03:39.Stan Wawrinka. Novak Djokovic is also through
:03:40. > :03:41.but Australian teenager Nick Kyrgios Well, after nearly two weeks
:03:42. > :03:49.of competition, you might have noticed the Wimbledon lawns are
:03:50. > :03:52.still looking pretty good. There's an impressive 41 tennis
:03:53. > :03:55.courts at the All England club and Ricky has been to meet
:03:56. > :04:13.the man who looks after them. Wimbledon is the only grand slam
:04:14. > :04:17.tennis tournament that actually is played on grass. Throughout the
:04:18. > :04:24.championships, those two weeks, more than 40 people maintain the grounds
:04:25. > :04:29.to make sure it is spot-on. Neal has worked here for 20 years. He makes
:04:30. > :04:35.sure the grass is no longer than eight millimetres in height. Why is
:04:36. > :04:41.that important? It is just so it is fair and equal for everyone. If the
:04:42. > :04:46.court is as flat as you can, you will not get dodgy ball bounces.
:04:47. > :04:52.Players will expect the ball to come up at a certain point. If it is too
:04:53. > :04:58.long, that might not happen. In Brazil, they have had to spray paint
:04:59. > :05:04.the grass green. We have not had to do that yet. This is all natural.
:05:05. > :05:10.The grass has to be eight millimetres in length. How do you
:05:11. > :05:13.check that? The machines are very hi-tech. Mechanics will set them
:05:14. > :05:22.with a digital bar. They are checked each morning. I have my ruler. Just
:05:23. > :05:28.checking. Eight millimetres in length. There are 54 million strands
:05:29. > :05:30.of grass alone here on Centre Court. Come back next week and I might have
:05:31. > :05:34.finished by then. A team of ocean explorers has
:05:35. > :05:37.broken the record for the longest Fabien Cousteau
:05:38. > :05:40.and two colleagues lived for 31 days in an underwater science lab,
:05:41. > :05:42.off the Florida Keys in America. They were investigating
:05:43. > :05:44.the effects of climate change That's all from me. Newsround's back
:05:45. > :05:59.right here this afternoon.