:00:08. > :00:12.Hi, I'm Ricky and this is Newsround. First, the Olympics is the biggest
:00:13. > :00:16.sporting event in the world with the next games set to be held in the
:00:17. > :00:20.Brazilian city of Rio in 2016. But there's real worries the city won't
:00:21. > :00:24.be ready in time, with loads of the buildings a long way off being
:00:25. > :00:27.finished. A top Olympic boss has now said that Rio's preparations are the
:00:28. > :00:32.worst he's ever experienced, and called the situation critical.
:00:33. > :00:35.Next, it's thinner than paper, stronger than metal and could one
:00:36. > :00:38.day be used to make bendy smart phones. Graphene has fascinated
:00:39. > :00:42.scientists for years, but now they've found a new way to make it -
:00:43. > :00:54.in a kitchen blender! You're not going to want to miss this. Take it
:00:55. > :00:58.away, Martin! Harder than diamonds, 100 times stronger than steel. And
:00:59. > :01:03.the thinnest material ever discovered. All these things make
:01:04. > :01:09.graphene, a very useful material. Graphene was first made ten year ago
:01:10. > :01:14.here at the University of Manchester when scientists realise their sticky
:01:15. > :01:19.tape was pulling graphene crystals off a lump of graphite. As well as
:01:20. > :01:22.being strong, tough and thin it is see through, bendy and conducts
:01:23. > :01:30.electricity. In the future, it could be used to
:01:31. > :01:33.make plane, bendy smartphones, even electronic paper. But graphene
:01:34. > :01:38.crystals are so small, you need a lot of them to make things so the
:01:39. > :01:41.search is on to find the best way to make them.
:01:42. > :01:47.Now, a group of scientists in Ireland have found they can extract
:01:48. > :01:52.thin layer of crystals but putting it in a kitchen blender It allows us
:01:53. > :01:56.to make a large amount of graphene in a way that is cheaper than other
:01:57. > :02:00.ways we have had before. The graphene you make with the blender
:02:01. > :02:05.is very good for things like printable ink, you can make an ink
:02:06. > :02:11.you can put in a printer and make headquarterically conducting
:02:12. > :02:16.circuits op paper, there are other application, electronic, like
:02:17. > :02:21.computer chips you can't use it for. We won't be using graphene planes
:02:22. > :02:26.for a while but smartphones with graphene screens are in development.
:02:27. > :02:29.Not bad for something discovered almost by accident.
:02:30. > :02:33.Now if you don't like flying, look away now. This is Lukla Airport,
:02:34. > :02:36.near to Mount Everest. Some call it the world's scariest, because pilots
:02:37. > :02:40.have to time their take-offs to perfection so that they don't drop
:02:41. > :02:43.off the end of the runway and down the sharp cliff.
:02:44. > :02:45.And finally, the glow in the dark road markings being trialled in the
:02:46. > :02:48.Netherlands are getting removed. It's because drivers began switching
:02:49. > :02:52.their car lights off to experience the glow, causing dangerous
:02:53. > :02:57.conditions on the road. That's all from me, Newsround's back tomorrow.