0:00:06 > 0:00:08Hi, I'm Leah with your Newsround update.
0:00:08 > 0:00:11Coming up, find out who's joining Germany in the World Cup final -
0:00:11 > 0:00:15Argentina or the Netherlands?
0:00:15 > 0:00:17The giant underground trampoline in Wales.
0:00:17 > 0:00:22And find out why this crocodile is getting married!
0:00:24 > 0:00:27But first this morning, lots of you won't be going to school today
0:00:27 > 0:00:30because your teachers are joining over a million council workers,
0:00:30 > 0:00:33nurses and firefighters in a strike.
0:00:33 > 0:00:37It's the biggest protest over pay that the current Government has ever
0:00:37 > 0:00:40faced and will affect services across England,
0:00:40 > 0:00:42Wales and Northern Ireland.
0:00:42 > 0:00:45Hayley's got more.
0:00:45 > 0:00:48Firefighters, hospital staff, government workers
0:00:48 > 0:00:51and even teachers.
0:00:51 > 0:00:54They are all supposed to be at work today, but many of them won't be.
0:00:54 > 0:00:56That's because more than 1 million of these
0:00:56 > 0:00:59workers have decided to strike.
0:00:59 > 0:01:02A strike is when a group of workers agrees to stop working
0:01:02 > 0:01:05for a period of time.
0:01:05 > 0:01:08They do this when they want to protest against something they
0:01:08 > 0:01:10think is unfair at their job.
0:01:10 > 0:01:13They think that by stopping work, politicians will listen more
0:01:13 > 0:01:16carefully to what they want.
0:01:16 > 0:01:19Teachers think they are having to work too hard and do too many things
0:01:19 > 0:01:22to be able to teach properly.
0:01:22 > 0:01:24The support staff - classroom assistants,
0:01:24 > 0:01:28dinner ladies, caretakers - are going on strike because
0:01:28 > 0:01:31they are not being paid enough.
0:01:31 > 0:01:34People in the UK have had the right to
0:01:34 > 0:01:37legally strike for over 200 years.
0:01:37 > 0:01:40The first big strike was held in 1926, when nearly all of the UK came
0:01:40 > 0:01:43to a standstill over a row about coal miners' working conditions.
0:01:43 > 0:01:47Since then, people have gone on strike over things like pay,
0:01:47 > 0:01:51working conditions, equal treatment for men and women, and job losses.
0:01:51 > 0:01:55But after a series of big protests by miners in the 1980s,
0:01:55 > 0:01:58the government introduced new rules that made it harder to strike.
0:01:58 > 0:02:02Back to today, and the government say they can't afford to pay what
0:02:02 > 0:02:05the people on strike are asking for.
0:02:05 > 0:02:09We can only do what we can afford to do as a country.
0:02:09 > 0:02:12The only people who are going to be injured or hurt by these strikes
0:02:12 > 0:02:15are those who have got nothing to do with the dispute whatsoever.
0:02:15 > 0:02:19For you, it may come as a day off school.
0:02:19 > 0:02:22But for teachers, other workers and the government, the row is expected
0:02:22 > 0:02:25to continue for a bit longer.
0:02:25 > 0:02:29Next, a big disappointment for the Netherlands, but a huge
0:02:29 > 0:02:33celebration for Argentina, who made it through to the World Cup final
0:02:33 > 0:02:36last night after a gruelling match that was goalless after extra time.
0:02:36 > 0:02:41Here's BBC Sport's Olly Foster with a recap of the match.
0:02:41 > 0:02:44Welcome to Rio de Janeiro.
0:02:44 > 0:02:47After 62 matches over the last four weeks all over Brazil, we?re just
0:02:47 > 0:02:51three days away from the final and we know who?s going to be playing
0:02:51 > 0:02:54after a crazy couple of semifinals.
0:02:54 > 0:02:58We had that amazing result with Germany beating Brazil 7-1.
0:02:58 > 0:03:02And almost completely the opposite, no goals last night between
0:03:02 > 0:03:04Argentina and the Netherlands, even though they had some of
0:03:04 > 0:03:07the world's best strikers playing.
0:03:07 > 0:03:11Arjen Robben, Robin van Persie and Lionel Messi.
0:03:11 > 0:03:14They couldn't even get a goal in extra time
0:03:14 > 0:03:18so they had to take penalty kicks.
0:03:18 > 0:03:21Argentina didn't miss any of theirs, as the Dutch had two saved
0:03:21 > 0:03:24by Romero.
0:03:24 > 0:03:28He is Argentina's hero who has taken them to the World Cup final,
0:03:28 > 0:03:32where they face the Germans here in Rio de Janeiro on Sunday.
0:03:32 > 0:03:35And for all the highlights of that match and the latest
0:03:35 > 0:03:39World Cup fact of the day, go to the Newsround website.
0:03:39 > 0:03:44Now to what could be the best thing ever.
0:03:44 > 0:03:48This is an underground trampoline made out of an old mine in Wales
0:03:48 > 0:03:51to create a giant underground play area.
0:03:51 > 0:03:54BBC Wales reporter Tomos Morgan was lucky enough to have a go -
0:03:54 > 0:03:58take a look.
0:03:58 > 0:04:03During the 1900s, these slate mines were the beating heart of the town.
0:04:03 > 0:04:06How times have changed.
0:04:06 > 0:04:12Hardhats aside, this isn't a mine any more, but a giant playroom.
0:04:12 > 0:04:15Twice the size of St Paul's Cathedral, with a kilometre
0:04:15 > 0:04:20of ropes to hold everyone up, this is the largest, possibly the only,
0:04:20 > 0:04:23underground trampoline in the world.
0:04:23 > 0:04:26And it is already proving a sell-out attraction.
0:04:26 > 0:04:28I'm tired!
0:04:28 > 0:04:32It's brilliant. I feel like a kid again.
0:04:32 > 0:04:36The lighting's great. The atmosphere's fantastic.
0:04:36 > 0:04:40It's just very tiring. I need to get a bit fitter!
0:04:40 > 0:04:44It's a game of snakes and ladders between the three levels,
0:04:44 > 0:04:47with walkways up and chutes down.
0:04:47 > 0:04:51It took four months to clear the cave to make this funhouse.
0:04:51 > 0:04:55Local sports clubs have already booked in their fitness sessions.
0:04:55 > 0:04:59And after an hour's bouncing around, it's easy to see why.
0:04:59 > 0:05:03After a while, even lying down seems to be a challenge.
0:05:03 > 0:05:06But could this be even cooler than the trampoline - a transformer plane
0:05:06 > 0:05:09that splits into three smaller ones.
0:05:09 > 0:05:13The company who designed this believe their creation could one day
0:05:13 > 0:05:16help planes fly more efficiently.
0:05:16 > 0:05:20It doesn't stop there - they've also designed a 3D printing plane
0:05:20 > 0:05:23which could print rescue vehicles.
0:05:23 > 0:05:26They're just ideas at the moment, but could be developed by 2040.
0:05:26 > 0:05:29Now, a crocodile isn't a wedding guest I'm sure I'd like to see.
0:05:29 > 0:05:33But the mayor of a fishing town in Mexico has married one!
0:05:33 > 0:05:36It sounds strange, but it's a tradition there.
0:05:36 > 0:05:39People believe the croc is a princess and that
0:05:39 > 0:05:42the ceremony will bring them plenty of fish and other seafood.
0:05:42 > 0:05:45After the wedding, there was a party where
0:05:45 > 0:05:48the mayor danced with his new wife.
0:05:48 > 0:05:51I wonder if the guests bought the newlyweds some croc-kery?!
0:05:51 > 0:05:55That's all from me, Newsround's back at 4.20pm.
0:05:55 > 0:05:58Have a nice day.