0:00:11 > 0:00:13Hi, I'm Leah, and this is Newsround.
0:00:13 > 0:00:14On the way...
0:00:14 > 0:00:17With summer holidays on the horizon, we ask where you guys like to go.
0:00:17 > 0:00:19Why these boys are wearing skirts to school.
0:00:19 > 0:00:29And way to glow, find out what causes this amazing sight.
0:00:31 > 0:00:33First this afternoon, Liam Payne, Rita Ora,
0:00:33 > 0:00:43Stormzy and Leona Lewis.
0:00:48 > 0:00:51Just a few of the names who are helping to raise
0:00:51 > 0:00:53money for those affected by the Grenfell Tower block fire
0:00:53 > 0:00:54which happened last week.
0:00:54 > 0:00:56The singers recorded Bridge Over Troubled Water
0:00:56 > 0:00:58to support victims' families.
0:00:58 > 0:01:01The song hit the number one spot on iTunes just two hours
0:01:01 > 0:01:02after it was released.
0:01:02 > 0:01:07X Factor judge Simon Cowell organised the track.
0:01:07 > 0:01:10I was thinking at the time, raise some money, I also
0:01:10 > 0:01:12thought raise awareness, and I also thought
0:01:12 > 0:01:12raise some support.
0:01:12 > 0:01:15I wanted it to be something that, you know, weeks, months later,
0:01:15 > 0:01:23when you hear the record, you still remember what happened.
0:01:23 > 0:01:26To the boys at a school in Exeter now who've decided to protest
0:01:26 > 0:01:27about their strict uniform policy in skirts!
0:01:27 > 0:01:29Confused?
0:01:29 > 0:01:32Here's Ayshah...
0:01:32 > 0:01:34Just another normal day walking into school, but wait,
0:01:34 > 0:01:36are the boys wearing...
0:01:36 > 0:01:39Skirts?
0:01:39 > 0:01:41Yep, they certainly are.
0:01:41 > 0:01:42But why?
0:01:42 > 0:01:44Well, the during the recent heatwave, the boys complained
0:01:44 > 0:01:46that they weren't allowed to wear shorts.
0:01:46 > 0:01:50Then a teacher jokingly said, "Well, you could wear skirts."
0:01:50 > 0:01:53Well, because five people did it yesterday, so then everyone was,
0:01:53 > 0:01:55like, if everyone else does it, then they can't stop
0:01:55 > 0:01:58anyone else doing it, so then they might bring shorts back
0:01:58 > 0:02:00for the summer.
0:02:00 > 0:02:02Girls are allowed to wear skirts all year round,
0:02:02 > 0:02:04they get cold legs and we have to sit there sweating.
0:02:04 > 0:02:05I think it's good.
0:02:05 > 0:02:10If they can't wear shorts, then they have to wear skirts.
0:02:10 > 0:02:12The school said, with hot weather becoming more normal,
0:02:12 > 0:02:15they might consider a change in the future, but the protesters
0:02:15 > 0:02:23didn't count on one thing - the heatwave is over.
0:02:23 > 0:02:25And what could be the biggest ship in the world has docked
0:02:25 > 0:02:27in the UK for the first time.
0:02:27 > 0:02:29Dozens of people headed out to Felixstowe, Suffolk,
0:02:29 > 0:02:32to watch it arrive all the way from Shanghai, China.
0:02:32 > 0:02:34She stands at 194 foot tall, about four times the size
0:02:34 > 0:02:40of Big Ben in London.
0:02:40 > 0:02:43Next - to something that looks like it's from out of this world.
0:02:43 > 0:02:45Algae, that glows in the dark.
0:02:45 > 0:02:50Here's Ricky to explain why.
0:02:50 > 0:02:53It's a rare sight, the ocean glowing in the dark.
0:02:53 > 0:02:55Yeah, a couple of salmon at the back jumping out.
0:02:55 > 0:02:57It was like fireworks sort of thing, the water.
0:02:57 > 0:03:00It was pretty cool.
0:03:00 > 0:03:02What you're looking at is Noctiluca scintillansmore, also
0:03:02 > 0:03:05known as sea sparkler.
0:03:05 > 0:03:07When you pick it up, it dribbles through your fingers.
0:03:07 > 0:03:09Whenever it lands on something, it glows.
0:03:09 > 0:03:13Just little splatters of bright blue, I suppose.
0:03:13 > 0:03:17The glow is caused by a natural chemical reaction with algae.
0:03:17 > 0:03:20When a boat drives through it or you put your hand through it,
0:03:20 > 0:03:23the chemical reaction is initiated, as a result of which,
0:03:23 > 0:03:26you get this emission of light.
0:03:26 > 0:03:29Algae are tiny living things that are found in water all the world.
0:03:29 > 0:03:32When the algae is touched, it changes colour from a dull pink
0:03:32 > 0:03:38to a bright electric blue.
0:03:38 > 0:03:41They are not observed as often in the colder waters off Australia
0:03:41 > 0:03:45but more in the sub tropical and warm temperate waters.
0:03:45 > 0:03:48This display was caught on camera at a beach in South Australia.
0:03:48 > 0:03:58The glow is completely harmless, but what a sight!
0:03:58 > 0:04:00It's getting closer to your summer holidays.
0:04:00 > 0:04:03But when it comes to the destination, do you prefer
0:04:03 > 0:04:05to visit the same place each year or go somewhere new?
0:04:05 > 0:04:07Well, psychologist Oliver James says it's better for children
0:04:07 > 0:04:10to go to the same place, because it's nice to know
0:04:10 > 0:04:12you are going to a familiar place.
0:04:12 > 0:04:14We asked what you think.
0:04:14 > 0:04:17It's best if you travel when you're younger and when you're older.
0:04:17 > 0:04:20I like going to the same place every year.
0:04:20 > 0:04:22I think it is nice to go somewhere new after a bit,
0:04:22 > 0:04:25but it's just relaxing to go to the same place and do
0:04:25 > 0:04:26the same things often.
0:04:26 > 0:04:28I personally like going different places, because it's good
0:04:28 > 0:04:36to get new experiences.
0:04:36 > 0:04:42Online, you've also been having your say about this.
0:04:52 > 0:05:01That's all from me, Newsround's back from 07.40 tomorrow morning.
0:05:04 > 0:05:07Yo, whassup? Do you watch CBBC shows on your phone or tablet?
0:05:07 > 0:05:08Oh, wait.