:00:23. > :00:28.Hello, a big Wednesday welcome. This is news round. Not to be
:00:28. > :00:31.missed this afternoon. The millions of animals and plants that still
:00:31. > :00:41.haven't been discovered. And two daredevil sisters give
:00:41. > :00:47.Hayley a taste of extreme sailing. First, the latest on the fast
:00:47. > :00:54.moving situation in Libya. Its leader Colonel Gaddafi is still in
:00:54. > :00:59.hiding tonight. That is despite thousands of people storming into
:00:59. > :01:03.his headquarters in Tripoli. Some of the supporters are still there.
:01:03. > :01:07.They have been fighting all day. It looks like it is almost over for
:01:07. > :01:11.him, but he's as the fight will go Just 24 hours ago this was the
:01:11. > :01:14.luxury home of the Libyan Leader Colonel Gadaffi. But look at it now
:01:14. > :01:20.- full of people who want him out. After six months of fighting, they
:01:20. > :01:23.stormed his compound, took it over and spent the night celebrating.
:01:23. > :01:27.This is Colonel Gadaffi ten years ago, in front of a statue he had
:01:27. > :01:29.built of a fist crushing an American plane. Here's the scene
:01:30. > :01:37.now - people destroying anything that reminds the man who's ruled
:01:37. > :01:43.the country for decades. -- reminds them of the man. BBC reporter Wyre
:01:43. > :01:48.Davies was there this morning. are now well inside his compound.
:01:48. > :01:53.The outer rim has been taken by the rebel fighters. The inner compound
:01:53. > :01:57.is still controlled by militia -- loyal to Colonel Gaddafi. There is
:01:57. > :02:01.a huge gun fight going on, these rebel fighters are going into
:02:01. > :02:04.trying mop up the resistance. Colonel Gadaffi's 42 years in power
:02:04. > :02:07.had been brutal. He used to lock up and sometimes kill people who
:02:07. > :02:10.disagreed with him. Trying to catch him is the next challenge. There's
:02:10. > :02:13.a huge network of underground tunnels leading out from the
:02:13. > :02:16.compound, which are thought to stretch all around the city. He may
:02:16. > :02:19.have escaped through one of these. And Colonel Gadaffi still reckons
:02:19. > :02:24.he's in charge. In this broadcast last night, he says he's going to
:02:24. > :02:26.return and calls on everyone in Libya to help him regain power. But
:02:26. > :02:31.leaders of the anti-Gaddafi movement have started setting up a
:02:31. > :02:35.new government to take full control of the country. In the capital's
:02:35. > :02:41.main square, the celebrations continue. But everyone knows
:02:42. > :02:44.there's a lot to do to get the country back up and running.
:02:44. > :02:49.Some breaking news - all the journalists - including some BBC
:02:49. > :02:52.reporters - being held at a hotel in Tripoli have now been freed. And
:02:52. > :03:02.we've got some special guides on the Newsround website if you want
:03:02. > :03:02.
:03:02. > :03:07.to know more about the situation in Libya. It is going to be a nail-
:03:07. > :03:12.biting night for Arsenal. They have lost Samir Nasri and Fabregas, but
:03:12. > :03:15.they will take on the Italian side Udinese in a crucial Champions'
:03:15. > :03:18.League clash. In the first leg, they won 1-0. As
:03:18. > :03:24.long as they don't lose tonight, the Gunners will qualify for the
:03:24. > :03:29.group stages of the competition. How many species of plants and
:03:29. > :03:37.animals do you think we have in this country?
:03:37. > :03:46.That is impossible. 8.7 million, scientists reckon. But so far, we
:03:46. > :03:51.have only found 1 million. From deep in our oceans to high up
:03:51. > :03:57.in the sky, from the coldest spot of the Earth to some of the hottest
:03:57. > :04:03.places, life is everywhere. And it is not only animals that make up
:04:03. > :04:09.the living species on Earth, as plants, fungi and Marco -- micro-
:04:09. > :04:12.organisms make-up part of the hour world. Scientists had only
:04:12. > :04:18.discovered 1.2 million species and will now, mostly from the land,
:04:18. > :04:22.rather than the oceans. So much more remains undiscovered. Experts
:04:22. > :04:28.reckon there are a total of 8.7 million species, which means we
:04:28. > :04:34.have only found around 15% so far. So how did the people who did the
:04:34. > :04:40.research managed to workout this big number? Until now, we have had
:04:40. > :04:46.a broad estimate, anywhere from 3 million to 100 million. What we
:04:46. > :04:52.have done it is refined it estimate. So now, we estimate around 8.7
:04:52. > :04:58.million. Scientists say there are many benefits to discovering the
:04:58. > :05:00.animals and plants. They say some could hold the key to finding new
:05:00. > :05:04.medicines to treat illnesses. Whatever is still out there to find,
:05:04. > :05:07.it's going to take a long time to track them all - experts reckon it
:05:07. > :05:10.would take more than 1,000 years! But that length of time worries
:05:10. > :05:20.some people, who fear many species will become extinct before they get
:05:20. > :05:24.
:05:24. > :05:27.to be identified. Hurricane Irene is already
:05:27. > :05:30.battering the Caribbean and is now swirling it's way towards the USA.
:05:30. > :05:40.Heavy rain and strong winds have forced many people to leave their
:05:40. > :05:47.homes. She has flown in a plane with a 12-
:05:47. > :05:51.year-old pilot and even fed sharks. Hayley has taken your mission to
:05:51. > :05:56.find the greatest summer holiday at very seriously.
:05:56. > :05:59.Next, extreme sailing! Put together some of the world's
:05:59. > :06:04.fast its sailing boats, a team of young sailors and the UK's to
:06:04. > :06:08.appease the waters. You have yourself two of the contenders in
:06:08. > :06:11.the National optimist sailing team. The girls have been spending their
:06:11. > :06:17.summer holidays sailing around the coast of the UK, but today, they
:06:17. > :06:21.are taking things to a whole other level. I have gone to be done in
:06:21. > :06:28.the alt -- Isle of Wight for the world extreme sailing competition.
:06:28. > :06:32.How are you? Come-on in. Nice to meet you. That is stylish arrival,
:06:32. > :06:39.I like it. What have you been doing this summer? We have been sailing
:06:39. > :06:46.around the country. What is it we are going to do today? We're going
:06:46. > :06:51.to sail in this, it is really be, really fast and really scary.
:06:51. > :06:54.you tell me! It is just over an hour before despite competes in the
:06:54. > :07:04.World Series, so we'd better get on and get it ready. -- before this
:07:04. > :07:06.
:07:06. > :07:09.These girls are not old enough to sail on their own yet, this boat
:07:09. > :07:16.reaches a whopping 73 kilometres an hour, and they need a lot of
:07:16. > :07:23.strength to steal it. So you have just sailed one of the world's most
:07:23. > :07:33.extreme boats, how do you feel? was a roller-coaster! How was it
:07:33. > :07:44.
:07:44. > :07:49.Last up, check out this special story. It is about chickens. This
:07:49. > :07:54.hen house at four ducklings. She sat on the duck eggs for a month,