from anti—freeze to lemon coloured snails that could potentially fight cancer, the oceans of antarctica are full of unique animals that scientists hope could hold the key to some major global problems. members of the british antarctic survey in cambridge, spend months diving in freezing waters. our science correspondent, richard westcott has been given special access to the creatures they bring back to study. up top, antarctica is a frozen desert but venture beneath the ice, its waters are teeming with life. creatures that hold clues to how the animal world will cope with climate change. we have been given a rare behind—the—scenes glimpse of some of the creatures scientists have brought back to to the uk to study. there are some bizarre animals, believe me. this is one of my favourite creatures. it is like the other starfish we were looking at, except one obvious, and very obvious, difference. can you flip it over

so we can see the mouth? this one may be, we'll take a hole and put it into there. in fact, it may well have something in there he's feeding off. studying these animals could help save lives. from the sea spider that can grow as big as a dinner plate, to the starfish that looks a bit like bagpuss. many are full of natural antifreeze that could be useful in the medical world. the humble sea lemon has no predators. the chemical putting them off might also fight cancer or infections. so there are a range of animals within the antarctic from things like this to sponges and other animals that live growing on the rocks that could potentially have really important chemicals for human society. so it's like the rainforest where you find medicines? absolutely.

you go through the ice and suddenly it's all pitch black and then as your eyes adjust, you look up and you have this amazing ice cover with colours, the browns, the greens. it's like it's got a cathedral—like feel. then obviously, i sink to the bottom, start my work, i could be anywhere. living in 0 degrees waters makes these animals grow much slower but much bigger than usual. this is the same group of animals as the woodlice you find in the garden but obviously one major difference, it is pretty big. this is another example of polar gigantism, where animals, because of the cold weather they're living in, can actually be bigger. from health and food supply to the impact of warmer oceans, these animals are helping us to understand the world our children will grow up with. those are the latest headlines. now on bbc news, it's time for our world. guatemala after the fire. last year, a devastating fire at a guatemalan children's home left 41 teenage girls dead and 15

with life changing injuries. the tragedy revealed a terrifying tale of mistreatment at the home. guatemala is one of the most murderous nations on earth. as you can see, there is a pretty large police presence here and that is because we are here. for parents, state care for their children is often and that is because we are here. for parents, state care for their children is often a desperate last resort. this area is very familiar for you.

stephanie arriaga has spent many hours here in guatemala city's general cemetery. how old was kimberly? kimberley died in the flames at the virgen de la asuncion children's home on march eight, 2017. in a nation used to tragic events, the fire shocked guatemalans. after a failed mass escape,

56 teenage girls had been locked into a classroom overnight by police. in an attempt to force the officers to let them out, one of them started a fire. the door was not unlocked until it was too late for too many. no one took charge. so stephanie founded a charity that helps families waiting outside the morgue for news of their daughters. so, you were here for 15 days? we are heading south out of the city to visit the children's home, that is now closed. guatemala has 5000 children in care, and this was the largest government facility. this is our guide.

she left the home before the fire but as a teenager, she lived here for more than a year. looks like a prison. doesn't look like a children's home. whoa.

a tower with a guard. it was built to house 400 children, but on the day of the fire, 600 were living here. now it is empty. we are not allowed inside. all you can see inside is some corrugated iron fencing that has obviously been put around the room where the girls died. that's about, i don't know, maybe 30 or a0 metres from this main gate. you can't see anything else. she came here because she was an orphan, but there are also boys and girls with disabilities, gang members, victims of sexual abuse, and children whose parents werejust too poor to keep

them at home. many of the children were desperate to get out. escapes happened often. in one 18—month period, more than 200 attempts were reported. some of the runaways were never found. why did the kids try and escape so often? because we understand that it happened a lot. at midnight! what was that?

how many days? it must have been terrifying. when the home closed after the fire, other institutions stepped in to help. some of the former residents went to this refuge,

a charity running children's homes. lionel is the director, and promotes a therapeutic environment. a stark contrast to the stories we've heard about the virgen de la asuncion. the girls are going to show us around the home now. just 28 girls live here — all survivors of sexual abuse. lionel is a well—known campaigner for child protection reform in guatemala. he had inside information about conditions in the virgen de la asuncion home. 50!

you were telling them what was happening in the home. and what were the authorities telling you? eight officials are in prison facing charges, including culpable homicide. but 15 months on, no one has been convicted. the streets of guatemala city are

often terrorised by violent gangs. the most troubled areas are known as zona rojas, red zones. we are meeting this couple in one of them, zone 18. here she is. 0k. they placed their daughter ashley in the home, and she perished in the fire. ashley was 14 when she died. i imagine that it costs you to look at that. tell me a little bit about why ashley was in the home.

for her, there were no options. she believed the only way she could protect her child was to put her in care. she takes us on a tour of the deceptively peaceful looking neighbourhood where ashley grew up. they do come now, but they sell their wares from the safety of their vans. this is a potato chips lorry and he's got an armed guard with him. in areas like this, where the state's so often absent,

the pressures on young people to get involved with gangs are immense. her own personal history made her acutely aware of the choices facing ashley. after the fire, more than 200 children living at the virgen de la asuncion children's home were sent back to their parents, many in marginalised neighbourhoods. in this brigt sunlight, the red zones, the zona rojas, the quite dangerous parts of guatemala city feel quite benign. we know that at least three adolescents who were returned to their families after the fire were assassinated in their own communities. it's grim. insecure at home with their families, often unsafe in children's homes, the safety net for people in guatemala is practically non—existent. we tracked down a teenager who escaped from the children's home

six months before the fire. elizabeth, as we will call her, doesn't want to be identified. she now lives on the streets of guatemala city and comes here every day to a charity helping homeless youngsters. she spent four years in the virgen de la asuncion. in 2016, she succeeded in getting away. but how do you keep safe on the streets, because the streets of guatemala, they are not a safe place for a young woman, are they? and if there are risks

on guatemala's mean streets, elizabeth dulls her fears by sniffing glue. as night falls, we visit the city's central park. elizabeth sleeps here and we wonder how many more former residents of the virgen de la asuncion children's home we might find. 0k, adios. what we have been told is there are quite a lot of kids

who are living here on the streets, who also escaped from virgen de la asuncion and, like elizabeth, it is too dangerous for them to go home and this is the only option. there is a very strong smell of glue. it is a cheap, nasty drug and does lasting damage. somebody has got a baby there. she looks very young, the mum. he is too high to make much sense but, like elizabeth, this 17—year—old chose the streets of guatemala city over the virgen de la asuncion. and on the seventh of march last

year, the day before the tragic fire, more than 100 boys and girls, also desperate to leave this notorious children's home, planned a mass escape. it was this that provoked the ultimately lethal response of the state. claudia was the guatemalan journalist who published testimony of the survivors of the fire. it was recorded while they were in hospital and described their capture. the recaptured youngsters were held

for hours outside the home. at around 1am on the eighth of march, they were taken back inside the home. bare mattresses were thrown into a classroom and 56 girls were locked inside by police officers. we still don't know who gave that order. nine minutes is what we have been told, nine minutes. nine long minutes. at the department of social welfare,

we visit the official responsible for guatemala's looked after children. when we meet him, he has been in his job three weeks. what responsibility does the department have for what happened at the children's home last year? as we understand it, there have been dozens of complaints against people working in the home, against the conditions there. why was it still open? the challenge to child

protection reform is huge, not least because of a national malaise — corruption. two of guatemala's former presidents arein prison on fraud charges, and nepotism, budget skimming and cash for contracts are all part of the virgen de la asuncion story. this girl, who lived here as a teenager, now has a job she likes and lives with extended family. but her experiences in this children's home have left their mark. how much time did you spend here? hello. on saturday, the weather was a little hit and miss across the north. we had some downpours and thunderstorms. we are not expecting that on sunday. however, sunday is expected to be

a cloudy day across much of the country. it may remain overcast right through the afternoon and into the evening across some western areas with a bit of light rain or drizzle. through the early hours, you can see the clear skies across some parts of the uk and as a result, quite chilly in rural spots. but this cloud will be over us on sunday but at least it won't be pouring with rain. through the early hours, you can see the clearer skies across eastern and northern areas. towards the west, we have the encroaching crowd, carried by an atlantic breeze. temperatures in the south first thing will be around 13 degrees, cooler in scotland, possibly as low as four degrees first thing in the morning. it starts off quite bright across eastern counties but quickly the clouds will increase. around some of the coastal areas, thick cloud and drizzle at times but also a few glimmers of brightness. however, the best chance of sunshine, i think, on sunday, across northern and eastern parts of scotland. aberdeen getting up to 19 celsius. that is how it will end on sunday. cloudy. here's a quick look at the pollen levels, you can see they are pretty high across england but with the winds coming in off the atlantic, just moderate levels across the west of the uk.

as we go through monday and tuesday, we will progressively see the weather systems moving towards the north. still, some weather fronts slicing across the northern half of the uk. the trend will be for warmer air to start wafting in from the south so temperatures are expected to gradually rise across the southern half of the uk through the week. monday starts of sunny across eastern and southern areas. we have the weather fronts moving into scotland, northern ireland and the north—west. there will be a bit of rain here. low pressure to the north. look at the weather in the south. lots of sunshine and temperatures getting into the mid—20s. as we go through tuesday and wednesday, the temperatures are expected to rise even further. the warmth, as it comes in from the south, doesn't quite reach scotland or northern ireland. it turns and ends up in continental europe. the temperatures are only expected

to rise across the southern half of the uk. the mid—high 20s in london but in aberdeen, temperatures will be closer to the teens. that is the latest from me. bye bye. this is bbc news. i'm nkem ifejika. our top stories: historic help. the so—called video assistant referee makes its world cup debut, while iceland melt messi for a cool result against argentina. a ship carrying more than 600 migrants, which has been refused entry by both italy and malta, is due to arrive in spain within the next few hours. homes charred, people carrying fresh scars. violence continues in nicaragua just a day after the government and opposition called a ceasefire. anger in athens as greece's pm survives a no confidence vote over a deal to rename macedonia.