:00:00. > :00:10.I'm Ricky, with all of Monday's top stories on the way.
:00:11. > :00:25.And I find out the science behind why we get scared.
:00:26. > :00:30.First, thousands of people in central Italy have spent
:00:31. > :00:33.the night sleeping in cars, tents and shelters,
:00:34. > :00:35.after the country's most powerful earthquake in almost 40 years.
:00:36. > :00:41.These aerial pictures show the damage caused
:00:42. > :00:50.It's the fourth quake to hit the area in three months.
:00:51. > :00:52.And there are warnings of aftershocks.
:00:53. > :00:56.And time for a quick sports round-up...
:00:57. > :00:58.Andy Murray is one step closer to becoming
:00:59. > :01:00.tennis world number one, after beating Jo-Wilfried Tsonga
:01:01. > :01:06.Murray can replace Novak Djokovic as number one if he wins
:01:07. > :01:11.And if Djokovic does not make the final.
:01:12. > :01:13.Lewis Hamilton's hopes of winning the Formula One world championship
:01:14. > :01:17.are still alive, after winning the Mexico Grand Prix.
:01:18. > :01:20.He's now 19 points behind Mercedes team-mate Nico Rosberg,
:01:21. > :01:27.And Chelsea are keeping the pressure on the Premier League title race
:01:28. > :01:34.Goals from Eden Hazard and Diego Costa mean that the Blues
:01:35. > :01:40.Just one point behind the leading three teams.
:01:41. > :01:43.I'm sure you know it's Halloween today -
:01:44. > :01:45.that time of year when we go trick-or-treating,
:01:46. > :01:51.carve petrifying pumpkins, and get frightened for fun!
:01:52. > :02:00.But how do our bodies change when we feel fear?
:02:01. > :02:05.Martin, Jenny, Leah and I have been finding out the science
:02:06. > :02:12.Right, then. What movie have we got?
:02:13. > :02:17.Well, it is Halloween, so we have got a scary movie.
:02:18. > :02:34.I can't believe you guys are scared of that.
:02:35. > :02:39.Come on, Leah. I can tell you were scared.
:02:40. > :02:43.No, it is science. Look!
:02:44. > :02:46.Science can tell us when we are scared.
:02:47. > :02:49.We can see it in the way our body reacts.
:02:50. > :02:52.You might first feel your heart beating very quickly.
:02:53. > :02:55.It sends blood around the body in order to react to the danger.
:02:56. > :03:00.Something else might see is you start to get sweaty.
:03:01. > :03:03.You might also see the hairs on the skin start to stand up.
:03:04. > :03:07.If we were furry creatures, that would make us look much bigger.
:03:08. > :03:10.And perhaps scarier than the thing that is scaring us.
:03:11. > :03:13.But we don't have lots of fur, so we see little lumps
:03:14. > :03:22.They are ready to do something, which means you might grip onto
:03:23. > :03:34.And the pupils of the eyes may dilate, so that your eyes look
:03:35. > :03:37.very wide, letting in lots of light so that we can make sense of
:03:38. > :03:40.But there is nothing wrong with being scared.
:03:41. > :03:44.And when we are with friends, in the right situation,
:03:45. > :03:48.We really can tell when you are scared.
:03:49. > :03:50.No, guys. I'm not convinced.
:03:51. > :03:51.There is nothing that scares me I'm...
:03:52. > :04:06.It took us hours to clean up that popcorn.
:04:07. > :04:10.Well, loads of you have been getting into the Halloween spirit by sending
:04:11. > :04:11.in your creative carvings and terrifying
:04:12. > :04:16.They've been giving Martin quite a scare.
:04:17. > :04:19.What are you trying to do to me, Katie?
:04:20. > :04:21.What frightening teeth your pumpkin has!
:04:22. > :04:24.Minion pumpkin - how did you do that?
:04:25. > :04:26.Cookie Monster! Emma, are the cookies for me?
:04:27. > :04:32.Gracey, those pumpkin eyebrows are terrifying!
:04:33. > :04:36.This Cheshire cat has got a gruesome grin.
:04:37. > :04:42.Boo! Hattie you gave me a fright!
:04:43. > :04:45.I wouldn't want to hang out with this mean pumpkin from Jack.
:04:46. > :05:01.Leo, Loki and Kane have been catching - I mean carving -
:05:02. > :05:03.them all - this must be pumpkin-achu.
:05:04. > :05:13.If you're planning to go trick-or-treating,
:05:14. > :05:16.then you might want to know what the weather's going to be like.
:05:17. > :05:22.Here's BBC weatherman Ben Witch - I mean Rich.
:05:23. > :05:31.Hello. Welcome to this look at the forecast. Something has gone wrong
:05:32. > :05:37.there. Something spooky seems to have happened. If you're heading off
:05:38. > :05:44.to a Halloween party, there is nothing scary going on. It is dry,
:05:45. > :05:51.maybe some fog. It will be milder out there. Really, there is nothing
:05:52. > :05:53.to be scared of. Oh, one more thing. Watch out for the bats. Happy
:05:54. > :05:58.Halloween! That's all from me, Newsround's
:05:59. > :06:02.back this afternoon.