0:00:12 > 0:00:15You're watching Newsround with me, Ricky.
0:00:15 > 0:00:18First up, Dancing On Ice is back on our screens this evening.
0:00:18 > 0:00:22If you thought the celebs were good, take a look at some of these figure
0:00:22 > 0:00:24skaters who are competiting in the Winter Olympics...
0:00:24 > 0:00:32Oh, and look out for a spectacular fall, too!
0:01:25 > 0:01:26Incredible!
0:01:26 > 0:01:29Sticking with the cold stuff, head online to find out why actor
0:01:29 > 0:01:30David Harbour is heading to the Antarctic.
0:01:30 > 0:01:32Clue - he's hoping to dance with penguins!
0:01:32 > 0:01:35Next, it's thought that in the UK we use more than eight billion
0:01:35 > 0:01:36plastic straws every year.
0:01:36 > 0:01:40A group of kids in Scotland are on a mission to get them banned.
0:01:40 > 0:01:42It's because they want to help protect our planet and cut
0:01:42 > 0:01:45the amount of plastic that gets thrown away.
0:01:45 > 0:01:48They've already convinced Glasgow Council, the biggest
0:01:48 > 0:01:50in Scotland, to ditch plastic straws, but their mission
0:01:50 > 0:01:55doesn't stop there.
0:01:55 > 0:01:59These kids are taking the ferry to the Isle of Arran.
0:01:59 > 0:02:01Around 5,000 people live there and they want them
0:02:01 > 0:02:05to quit using them to.
0:02:05 > 0:02:07There's animals out there who are in danger
0:02:07 > 0:02:08because they're eating plastic.
0:02:08 > 0:02:11What do you hope to do with this campaign?
0:02:11 > 0:02:14Just try and stop plastic straws from being used
0:02:14 > 0:02:16and start using paper straws.
0:02:16 > 0:02:18It's our future and we need to make sure that it's not
0:02:18 > 0:02:22all gone when we grow up.
0:02:22 > 0:02:26They call themselves the Ocean Defenders.
0:02:26 > 0:02:29A lot of plastic, when it's thrown away, ends up in the sea.
0:02:29 > 0:02:34It can stay there for hundreds of years, because it doesn't rot
0:02:34 > 0:02:38like a paper straw would.
0:02:38 > 0:02:41This means it's harmful to both animals and the environment.
0:02:41 > 0:02:43They are talking to the kids about what they're doing
0:02:43 > 0:02:48so they can do the same.
0:02:48 > 0:02:51I haven't really thought about it, but now the presentation has
0:02:51 > 0:02:52taught me a lot more about it.
0:02:52 > 0:02:54It's very different now.
0:02:54 > 0:02:56I think the most surprising and interesting thing is how much
0:02:56 > 0:02:58this does affect the environment.
0:02:58 > 0:03:02You wouldn't expect that from wee tiny plastic straws.
0:03:02 > 0:03:05Maybe we can speak to some of the cafes on the island.
0:03:05 > 0:03:08Because I know that a lot of the cafes do sell plastic straws.
0:03:08 > 0:03:12So if we could maybe get them to change to the paper straws,
0:03:12 > 0:03:13it would be really good.
0:03:13 > 0:03:16We're trying to make people stop expecting a straw in their drink.
0:03:16 > 0:03:18They are so knowledgeable and they're really confident and
0:03:18 > 0:03:23passionate in the way they speak.
0:03:23 > 0:03:24Did you find their arguments persuasive?
0:03:24 > 0:03:26I mean, you've got the plastic straws there.
0:03:26 > 0:03:27Absolutely, yes.
0:03:27 > 0:03:28This is my naughty pot.
0:03:28 > 0:03:29Naughty pot no more!
0:03:29 > 0:03:36You go, guys!
0:03:36 > 0:03:38Now, we've seen humans walking on the moon,
0:03:38 > 0:03:41but will it ever be possible for that to happen on Mars?
0:03:41 > 0:03:43It might sound like an idea for a new sci-fi movie,
0:03:43 > 0:03:46but a research team have been spending time in the Oman desert,
0:03:46 > 0:03:51doing experiments that could one day make that a reality.
0:03:51 > 0:03:55Sending a manned mission to Mars has been a space explorer's ambition
0:03:55 > 0:04:00for years and these researchers are hoping to make it a reality.
0:04:00 > 0:04:02They're in the Oman desert in the Middle East, doing
0:04:02 > 0:04:06experiments that could one day help humans to survive on the Red Planet.
0:04:06 > 0:04:13But why Oman?
0:04:13 > 0:04:16We need a place that looks as much as Mars as possible.
0:04:16 > 0:04:19And we found it here in Oman.
0:04:19 > 0:04:21It's a beautiful place, but it's most of all
0:04:21 > 0:04:25a scientifically useful place, and operationally useful.
0:04:25 > 0:04:27Although still a distant dream, it felt a little bit closer
0:04:27 > 0:04:34on Tuesday when Elon Musk's company SpaceX successfully launched
0:04:34 > 0:04:42the world's most powerful rocket.
0:04:45 > 0:04:53While getting there is one challenge, astronauts will also be
0:04:53 > 0:04:54need to survive on Mars.
0:04:54 > 0:04:56That's why these experiments are so crucial.
0:04:56 > 0:04:59Once we will go to Mars and we will stay on Mars.
0:04:59 > 0:05:02We will have to use the resources we find on Mars, because we cannot
0:05:02 > 0:05:03bring everything from Earth.
0:05:03 > 0:05:06That is called in situ resource utilisation so we have to use
0:05:06 > 0:05:07the things we find there.
0:05:07 > 0:05:10First of all to sustain life there, to sustain missions there
0:05:10 > 0:05:12and then in the longer run, for other things.
0:05:12 > 0:05:15This vast desert is the perfect spot to carry out tests like growing
0:05:15 > 0:05:17vegetables and trying out the bulky spacesuits.
0:05:17 > 0:05:19Who knows, one day similar scenes could be
0:05:19 > 0:05:23taking place on Mars.
0:05:23 > 0:05:26Finally, this has got to be one of the best stories to come out
0:05:26 > 0:05:28of the Winter Olympics so far.
0:05:28 > 0:05:30When Norwegian skiathlon competitor Simen Krueger took a tumble
0:05:30 > 0:05:36in the early stages of his race, he'd have been forgiven
0:05:36 > 0:05:38for thinking it was game over.
0:05:38 > 0:05:41But he got up, and he powered on.
0:05:41 > 0:05:42And you'll never guess what...
0:05:42 > 0:05:45He only won gold!
0:05:45 > 0:05:46A lesson for life there.
0:05:46 > 0:05:51Never give up!
0:05:51 > 0:05:53That's all for today.
0:05:53 > 0:05:53Newsround's back in the morning.
0:05:53 > 0:05:54Enjoy the rest of your weekend.
0:05:54 > 0:06:01Bye-bye!