:00:00. > :00:00.Good morning, guys, Jenny here with the kids taking on this top author
:00:00. > :00:15.Plus, the record breaking Batmen in Canada.
:00:16. > :00:22.First, to some big news for all you space fans, as in the last few
:00:23. > :00:25.hours a special craft that's spent 10 months travelling to Mars has
:00:26. > :00:30.The Maven craft, built by US space agency NASA, has travelled more than
:00:31. > :00:35.442 million miles from Earth and had to slow down enough to allow
:00:36. > :00:44.All being well, it'll soon touch down on Mars and
:00:45. > :00:46.spend the next year investigating why the planet is so dry.
:00:47. > :00:49.Now to the kids taking to the pool with one of Britain's best
:00:50. > :00:52.Gangsta Granny writer David Walliams, who swam
:00:53. > :00:56.the length of the River Thames for Sport Relief, joined school
:00:57. > :01:00.kids from across the UK to take part in a special swimming relay.
:01:01. > :01:02.It's all to get more people into swimming.
:01:03. > :01:12.BBC Sport's Mike Bushell donned his cap and armbands to have a go too.
:01:13. > :01:16.He has tackled the English Channel and the Thames, but this weekend
:01:17. > :01:25.David Williams was part of a relay team taking part in this relay. In
:01:26. > :01:31.18 of mixed abilities, we were challenged with something 1000
:01:32. > :01:34.metres each broken down into 250 metre chunks. The thing about the
:01:35. > :01:38.challenge this that I have done before is I was not competing
:01:39. > :01:42.against anyone. Here it is different because I got in first and the first
:01:43. > :01:46.thing that happened is someone overtook me and went twice as fast
:01:47. > :01:49.as me, so I didn't like it X by Craig that it
:01:50. > :01:54.as me, so I didn't like it X by to see families enjoy swimming and
:01:55. > :01:57.everyone doing it for the fun of it. Swim Britain, taking place this
:01:58. > :02:01.month at ten venues across the country, instigate more of a
:02:02. > :02:01.swimming, and being a relay event puts
:02:02. > :02:07.swimming, and being a relay event family and friends to join in. It is
:02:08. > :02:12.to try to get people to take part for the fun of it, and it is
:02:13. > :02:15.important for kids to learn to swim. If kids could not swim it would be a
:02:16. > :02:19.shame because there is so much fun you can have in the water. It can be
:02:20. > :02:23.tough at times but you can count on your team-mates to support you on
:02:24. > :02:29.your way around. Unless you keep them waiting too long. And you have
:02:30. > :02:33.a comic genius on your team. I don't think he will finish until tomorrow.
:02:34. > :02:37.Good luck, Mike. By! In other news, hundreds of thousands
:02:38. > :02:46.of people have been taking to Thompson, turned out in London for
:02:47. > :02:49.a special march to urge countries around the globe to cut the amount
:02:50. > :02:53.of harmful gases they produce. It was one
:02:54. > :02:55.of more than 2,000 marches planned for the start of United Nations
:02:56. > :02:58.talks on the issue later this week. But probably not toads.
:02:59. > :03:07.endangered species, you might Scientists in Scotland are worried
:03:08. > :03:25.about the rare natterjack toad. I have come here to this big reserve
:03:26. > :03:28.in Dumfries in the South of Scotland, and I am on the lookout
:03:29. > :03:34.for something which is really hard to find, natterjack toads.
:03:35. > :03:38.Natterjack toads usually live in salt marshes and sand dunes. This
:03:39. > :03:43.environment is unpredictable and can leave the toads without access to
:03:44. > :03:47.fresh water. Since the 1970s their numbers have been falling and
:03:48. > :03:51.researchers think there are only 60 left in this part of Scotland. The
:03:52. > :04:00.best time to spot them is at night. Using one of these, and one of
:04:01. > :04:03.these. Kirsty is a toad expert and it is important to remember some
:04:04. > :04:12.toads can be poisonous so it is best to leave it to the professionals
:04:13. > :04:16.like Kirsty. Let's look. We have been searching that ours and
:04:17. > :04:21.couldn't spot a single natterjack toad. Why is it so difficult to find
:04:22. > :04:26.one? They need sand dunes because they go and hibernate in the winter
:04:27. > :04:32.in the borrower and it keeps them warm. Throughout the UK there are
:04:33. > :04:35.not a lot of them any more. Once a natterjack has been found, they are
:04:36. > :04:39.measured and photographed and the information goes into a big
:04:40. > :04:43.database. We have got fingerprints which are different, and the line on
:04:44. > :04:48.the back of the toad is different for every toad. We have found some
:04:49. > :04:54.toad lips which have emerged this year and got picked Jews of them.
:04:55. > :04:56.The pictures will help scientists to keep track of the Endangered Species
:04:57. > :05:01.Act. -- got pictures of them. Well, sticking with
:05:02. > :05:03.the wildlife theme, loads and loads of you have been getting
:05:04. > :05:06.in touch with your spider stories. It's after experts claimed
:05:07. > :05:08.the mild weather recently could lead Apparently the warmer temperatures
:05:09. > :05:12.mean there are more insects And you've been telling us
:05:13. > :05:27.about your spider sightings on Goldie in London said she had a
:05:28. > :05:28.spider dangle over her head in the car and it was huge.
:05:29. > :05:31.Melly from London said, ?I've seen loads in my garden and
:05:32. > :05:36.And finally, you might have always thought there was just one Batman.
:05:37. > :05:38.Well, that?s definitely not the case in one Canadian city.
:05:39. > :05:40.542 men in Calgary broke the Guinness World
:05:41. > :05:43.Record for the largest gathering of people dressed as Batman.
:05:44. > :05:49.They smashed the previous record of 250 people kitted out
:05:50. > :05:53.That's all from me, Newsround's back right here at 4.20pm.