:00:00. > :00:08.It's Saturday, I'm Ricky, and here's what we've got coming
:00:09. > :00:13.We'll show you the footy flood lights being powered by people.
:00:14. > :00:16.Plus, Prince Harry gives wheelchair rugby a go at the Invictus games.
:00:17. > :00:27.But first to a global effort to try and tackle litter.
:00:28. > :00:30.Today, people all round the world are giving up their time
:00:31. > :00:34.The "Let's Do It" campaign was launched in Estonia
:00:35. > :00:37.in Eastern Europe, but has since spread to loads of other countries.
:00:38. > :00:40.Thousands of people have volunteered to help out in their local area,
:00:41. > :00:50.including this lot in the north west of England.
:00:51. > :00:59.We have about 40 clean-ups taking place. We are hoping to bring down
:01:00. > :01:02.as many people as possible, thousands, to stand together against
:01:03. > :01:08.litter. I am disgusted with all the rubbish around, being thrown by
:01:09. > :01:12.irresponsible beeping. It is very distressing, we have to come
:01:13. > :01:15.together as a community to solve this problem. It is very inspiring,
:01:16. > :01:20.if we can make this an annual event. Next, the question of whether people
:01:21. > :01:22.power could be converted A UK company has just built
:01:23. > :01:26.a high-tech footy pitch in one of Brazil's poorest slums that uses
:01:27. > :01:29.the foot movement of players to turn They think it could just be
:01:30. > :01:40.the beginning. The World Cup may well be over, but
:01:41. > :01:46.Brazil is showing off a brand-new specially built playing surface in
:01:47. > :01:52.the slums of Rio. This is the first player powered football pitch. The
:01:53. > :01:55.more you run, the more energy is created to power the floodlights
:01:56. > :01:59.that light up the pitch. The technology behind it all was
:02:00. > :02:04.developed by a UK company, and these kids were the first to give it a
:02:05. > :02:08.go. So, how does it work? These special tiles laid under the surface
:02:09. > :02:13.turn the energy of movement into electricity. That, combined with
:02:14. > :02:18.solar panels around the pitch, helps produce energy, enough to power the
:02:19. > :02:22.floodlights overhead. However, it does not stop there. It is hoped the
:02:23. > :02:26.technology can help to help fuel the future by storing the energy created
:02:27. > :02:31.by us as we walk, not just playing football, but in shopping centres
:02:32. > :02:35.and train stations, where there are lots of people. It can be used in
:02:36. > :02:38.busy areas where there are people walking to power localised
:02:39. > :02:43.lighting, safety lighting, football pitches, anywhere where there are
:02:44. > :02:47.each points of people and it can go straight into the local grid as a
:02:48. > :02:51.power source. It is hoped that developments like this in places
:02:52. > :02:55.like Brazil can help showcase that their dreams are not limited to
:02:56. > :02:58.footballing fame, but that science and technology is the future. And it
:02:59. > :03:06.will remind children that there are two teas -- other opportunities for
:03:07. > :03:17.people out there, not just football. It is an opportunity for the new
:03:18. > :03:22.generation, for science, the kits can be more aware about this, there
:03:23. > :03:25.is more opportunity. It is wonderful. The technology is new and
:03:26. > :03:30.does not come cheap, but powering the football pitch is one small
:03:31. > :03:31.example of what one day maybe a reality in towns and cities in
:03:32. > :03:34.fuelling the future. Prince Harry might have thought up
:03:35. > :03:37.the idea for the Invictus Games, but A sell-out crowd of more than 6,000
:03:38. > :03:43.were left cheering in delight as he and a star-studded cast took part in
:03:44. > :03:46.a special game of wheelchair rugby. It was the highlight
:03:47. > :03:48.of the second day of the games, which are for wounded and injured
:03:49. > :03:51.ex-servicemen and women. Former Olympic runner,
:03:52. > :04:06.Dame Kelly Holmes, was one During practice, Prince Harry kept
:04:07. > :04:10.barging into me and blocking me, and I was determined to get him back
:04:11. > :04:15.today but I didn't get the chance. Everyone gave their best, but most
:04:16. > :04:16.of all we enjoyed it. We were all incredibly honoured to be part of
:04:17. > :04:19.it. It was an exciting experience. If dancing bears,
:04:20. > :04:21.funny tongues and bats breaking into to TV studios are your kind
:04:22. > :04:24.of thing, then don?t go anywhere! Yes, it's time to check out
:04:25. > :04:27.the weirdest and most wonderful stories of the week with Strange,
:04:28. > :04:39.Stranger, Strangest. You have probably heard of the
:04:40. > :04:42.foxtrot, but how about the bear cub swivel? A couple of friends caught
:04:43. > :04:47.this extraordinary moment was out playing golf in Western Canada. The
:04:48. > :04:59.bear cub decided to put his dancing shoes on. This little fellow is
:05:00. > :05:03.after a place on Strictly! You might think my job is difficult, but these
:05:04. > :05:10.poor newsreaders got a shock during a live broadcast in America. A bat
:05:11. > :05:14.gate-crashed this newsroom in Tennessee, sending the presenters
:05:15. > :05:18.into a bit of a flap. They eventually managed to catch the bat
:05:19. > :05:24.several hours later and released it into nearby woods.
:05:25. > :05:29.Guinness world records celebrates its 60th anniversary this year, and
:05:30. > :05:35.the newest setting record holders are as strange as ever. This cat set
:05:36. > :05:40.the record for the longest jump for a cat by leaping over 1.8 metres.
:05:41. > :05:46.But this next record left the use round off his tongue tied. This man
:05:47. > :05:51.has the world's longest tongue. It is a whopping ten centimetres long.
:05:52. > :05:54.That's all from me, but Newsround is back here tomorrow.
:05:55. > :05:58.Check out the quiz of the week on the website in the meantime and