:00:00. > :00:00.Saturday. -- we'll hope. Don't forget to watch tomorrow when
:00:00. > :00:07.Arsenal and England legend Alex Scott will be presenting.
:00:08. > :00:10.Hi, I'm Ayshah, it's Friday morning and you are live with CBBC.
:00:11. > :00:14.A lucky escape for people who were on a volcano when it erupted.
:00:15. > :00:28.And how a spider's big appetite is good for us humans.
:00:29. > :00:31.First up, to the lucky escape of a film crew and some tourists
:00:32. > :00:33.who were on Mount Etna when it erupted.
:00:34. > :00:35.This is the moment the volcano shot hot rocks,
:00:36. > :00:46.People ran away from the blast to safety and although some were hurt
:00:47. > :00:48.amazingly there were no serious injuries.
:00:49. > :00:50.BBC Reporter Rebecca Morelle was there and has spoken
:00:51. > :01:00.What happened is only really starting to sink in. Look at this,
:01:01. > :01:05.this hole was made by one of the incredibly hot pieces of volcanic
:01:06. > :01:07.rock that rained down upon us. We had a very, very narrow escape.
:01:08. > :01:10.Mount Etna is one of the world's most active volcanoes
:01:11. > :01:17.and it is usually thought to be safe to view lava flows close up
:01:18. > :01:20.but explosions like this one are unpredictable, as volcano expert
:01:21. > :01:30.Really amazing scenes at Mount Etna. It's one of your's most active
:01:31. > :01:35.volcanoes and it has been showing some fantastic eruptions recently.
:01:36. > :01:38.You can normally look at the lava flows from a reasonably close
:01:39. > :01:43.distance, but in this instance what Rebecca and the camera crew were
:01:44. > :01:46.caught up in is what we call a rootless eruption. Essentially the
:01:47. > :01:53.lava flows are coming over the water, in this case snow, and it is
:01:54. > :01:57.flashing the snow into steam. It's really dramatically expanding, and
:01:58. > :02:01.it causes an eruption of the lava flow itself. It is called a rootless
:02:02. > :02:05.because it doesn't have a vent beneath it, it's being driven by the
:02:06. > :02:09.ice and water being flashed into steam. The problem with these is
:02:10. > :02:12.that they are really rather unpredictable, so although it is
:02:13. > :02:17.great to go and view these volcanoes as close as you can safely do, at
:02:18. > :02:19.this time of year when there's lots of snow around Mount Etna, it can be
:02:20. > :02:22.a treacherous place to be. Now, to rugby union
:02:23. > :02:24.and it's the final weekend England may have already
:02:25. > :02:26.won the championship, but here's Martin to tell us why
:02:27. > :02:45.there's still plenty to play for. Six teams came to the tournament
:02:46. > :02:49.with high hopes. But then, one by one, they saw their chances of
:02:50. > :02:54.victory slip away. All except reigning champions, England. Over
:02:55. > :03:04.the last six weeks we have seen some amazing tries. And some shocking
:03:05. > :03:10.fails. Oh, my word. But the four teams looking to tie up second place
:03:11. > :03:16.are Italy, still searching for their first win, so expect Saturday's
:03:17. > :03:20.games to be as ferocious as ever. England visit Ireland in the final
:03:21. > :03:25.match. A 19th straight victory for Eddie Jones's men will not only give
:03:26. > :03:28.them a second Grand Slam in two years, but also break the record for
:03:29. > :03:35.the most wins in a row by an international team. A record
:03:36. > :03:38.currently held by none other than the mighty All Blacks. But Ireland
:03:39. > :03:43.will be doing everything in their power is to stop their fierce rivals
:03:44. > :03:47.from making history. And who were the team that brought the New
:03:48. > :03:48.Zealand winning streak to an end? England's opponent on Saturday,
:03:49. > :03:50.Ireland. But it turns out these guys
:03:51. > :03:55.have a very big appetite. And actually it's doing
:03:56. > :04:06.us all a favour. Arachnids. These creepy, Crawley
:04:07. > :04:11.beasties are many people's top phobia. But, maybe they should be
:04:12. > :04:17.known as our eight legged fairings. Hear me out on this one. A new study
:04:18. > :04:20.revealed that spiders have a pretty big appetite. Apparently they eat up
:04:21. > :04:26.to 800 million tonnes of insects every year. It might sound like they
:04:27. > :04:31.are greedy, but they are helping humans and saving us from disease
:04:32. > :04:35.carrying pests like flies and insects. Without them, the world
:04:36. > :04:43.would be swamped with bugs. So, for that, you have to give them a thumbs
:04:44. > :04:47.up. This spectacular appetite forms a very important, if rather gross,
:04:48. > :04:49.part of the food chain. So what you think about spiders now? Still
:04:50. > :04:51.scared? Me too. Just time to say Happy St Patrick's
:04:52. > :04:55.Day to everyone celebrating today. Newsround's back right
:04:56. > :04:58.here in about half an hour.