0:00:13 > 0:00:17Hi, Im Ayshah, and this is your Friday Newsround.
0:00:17 > 0:00:19First up, a BBC investigation has shown there are problems
0:00:19 > 0:00:21with the way YouTube deals with upsetting comments
0:00:21 > 0:00:23aimed at children.
0:00:23 > 0:00:26The people who monitor and report these comments say
0:00:26 > 0:00:28they're worried that they are not being removed, even
0:00:28 > 0:00:33after they have been reported.
0:00:33 > 0:00:35YouTube say they remove most of the upsetting
0:00:35 > 0:00:41comments within 24 hours,
0:00:41 > 0:00:44but children's charity the NSPCC say they want more to be
0:00:44 > 0:00:46done by the Government.
0:00:46 > 0:00:48And don't forget for help and advice on this you can head
0:00:48 > 0:00:51to the Newsround.co.uk and check out our staying safe online guide.
0:00:51 > 0:00:54It's Black Friday today!
0:00:54 > 0:00:59So, what's that?
0:00:59 > 0:01:02It's when adults spends loads of money on big sales.
0:01:02 > 0:01:04It's something that started in America
0:01:04 > 0:01:07and then came here.
0:01:07 > 0:01:10People in the UK are expected to spend over one billion pounds,
0:01:10 > 0:01:12let's hope there's some Christmas pressies in there.
0:01:12 > 0:01:14In football, it was a bad night for Everton
0:01:14 > 0:01:15in the Europa League.
0:01:15 > 0:01:18They were thrashed 5-1 by Italian side Atalanta,
0:01:18 > 0:01:20with three of those goals coming in the last few
0:01:20 > 0:01:21minutes of the match.
0:01:21 > 0:01:23Unsurprisingly Everton have finished bottom
0:01:23 > 0:01:29of their group in the tournament.
0:01:29 > 0:01:32When will we be able to travel at warp speed?
0:01:32 > 0:01:42That's the super-fast speed technology that allows people
0:01:44 > 0:01:46to travel through space on shows like Star Trek.
0:01:46 > 0:01:48It's our big question this week and we got the answer
0:01:48 > 0:01:57from Nasa, of course.
0:01:57 > 0:02:00Well, right now it's impossible for us to move at warp
0:02:00 > 0:02:02speed through space.
0:02:02 > 0:02:05We've thought about ways of trying to do that,
0:02:05 > 0:02:08but there is nothing that is practical at this point.
0:02:08 > 0:02:10For example, right now our fastest spaceships can travel
0:02:10 > 0:02:13at about 25,000 miles an hour.
0:02:13 > 0:02:16With the speed of light, we can travel at about
0:02:16 > 0:02:17186,000 miles a second.
0:02:17 > 0:02:21If we could travel at that speed, that would take us a second
0:02:21 > 0:02:23and a quarter to get to the moon.
0:02:23 > 0:02:26Right now, with our fastest ships, we can take about three
0:02:26 > 0:02:28days to get to the moon.
0:02:28 > 0:02:35So, well, really, really slow in comparison to the speed of light.
0:02:35 > 0:02:38Now, we've also computed how much energy it takes for a spaceship
0:02:38 > 0:02:45to go at about a tenth of the speed of light, and that is about between
0:02:45 > 0:02:49five and 100 times the total world energy output.
0:02:49 > 0:02:52So, wow, all that energy, so much, and we just don't
0:02:52 > 0:02:55have that on the earth.
0:02:55 > 0:02:58So we're going to have to find some new fantastic way of creating that
0:02:58 > 0:03:02energy before we can even think about going near the speed of light,
0:03:02 > 0:03:10let alone going at warp speed.
0:03:10 > 0:03:13And we'll be answering one of your big questions every Thursday.
0:03:13 > 0:03:22So if there's something you really want to know go online right now.
0:03:22 > 0:03:24Big news for Doctor Who fans.
0:03:24 > 0:03:26This guy, Tom Baker, who played the Time Lord in the 1970s,
0:03:26 > 0:03:30has taken on the role again for a new episode.
0:03:30 > 0:03:33He's returned to complete the unfinished story of Shada filmed
0:03:33 > 0:03:40in Cambridge 38 years ago.
0:03:40 > 0:03:42Next meet the world's best teacher!
0:03:42 > 0:03:44Maggie MacDonnell from Canada won this year's famous
0:03:44 > 0:03:45global teacher prize.
0:03:45 > 0:03:47She teaches at a school in the Arctic Circle,
0:03:47 > 0:03:50where the children walk for miles through snow and freezing
0:03:50 > 0:03:54temperatures just to get to class.
0:03:54 > 0:03:56Everyday when my students come to school and they come
0:03:56 > 0:03:59in my classroom, I thank them for getting there that day.
0:03:59 > 0:04:01Because I know they've run a marathon sometimes,
0:04:01 > 0:04:04they've run over all sorts of obstacles just to get
0:04:04 > 0:04:07to the classroom door.
0:04:07 > 0:04:14My name is Maggie MacDonnell and I teach in the Arctic.
0:04:14 > 0:04:17As a teacher in the Arctic, the definition of a teacher
0:04:17 > 0:04:20there is very, very broad.
0:04:20 > 0:04:23We are not only instructing lessons in the classroom,
0:04:23 > 0:04:26but you really have to engage with your students
0:04:26 > 0:04:30outside of the classroom.
0:04:30 > 0:04:32You have to make the class and school welcoming to them.
0:04:32 > 0:04:35They have to see you in the community.
0:04:35 > 0:04:38Often you take on roles such as a social worker or a counsellor
0:04:38 > 0:04:41or maybe even a family friend.
0:04:41 > 0:04:44I think that if a student from the UK or India
0:04:44 > 0:04:48were to drop into my classroom, the one thing that they may be
0:04:48 > 0:04:53surprised about is that not every classroom has four walls.
0:04:53 > 0:04:55And as much as possible I try to take my students outside
0:04:55 > 0:04:59of the traditional school and into the community where we can
0:04:59 > 0:05:03do project-based learning, authentic learning, and I think
0:05:03 > 0:05:07that's what's really powerful about the style of teaching that
0:05:07 > 0:05:10I've been working on.
0:05:10 > 0:05:12As much as possible I love integrating my students
0:05:12 > 0:05:15into the community, creating opportunities for them to offer
0:05:15 > 0:05:21community service and basically create opportunities for my students
0:05:21 > 0:05:24to see themselves not as problems but as agents
0:05:24 > 0:05:32of change in their community.
0:05:32 > 0:05:37Finally, to the story of the lost teddy bear who flew 200 miles to be
0:05:37 > 0:05:43reunited with his owner.
0:05:43 > 0:05:45Four-year-old Summer accidentlally left him behind
0:05:45 > 0:05:48at Edinburgh Airport.
0:05:48 > 0:05:51Luckily for Summer one of the planes crew spotted her families social
0:05:51 > 0:05:54media plea to find the bear, and Teddy was given his own seat
0:05:54 > 0:05:57on the plane to fly back to Orkney and home to Summer.
0:05:57 > 0:05:58That's all for now.
0:05:58 > 0:05:59We'll be back this afternoon.
0:05:59 > 0:06:00Bye.