drone. the original brief was to be able to film the car and keep up with the car. and so that was what was done. and then the footage is really impressive. and so then you start thinking, well, how can that be used in the future? where do we want to go with that? the main thing they wanted was a weight saving. and so we looked at the design of what i call the bodywork on the outside of it, and then there's a cruciform structure that actually holds the motor. we took those, we re—engineered them in composite materials. so i think overall we reduced the weight of the drone by about 10%. and yeah, that helped just lift that performance of the drone to that higher level so that it was able to keep up with the car. think straight line, it's probably faster than the f1 car. i think his biggest challenge is how you stop the drone because it's not it's not it hasn't got four nice to his eyes in contact

because it's not, it's not, it hasn't got four nice to his eyes in contact with the ground to to slow it up so it's pretty much having to reverse the direction of the drone and fly it backwards to actually slow the drone down. and for me, the most impressive thing there is that they're they're able to control the drone, flip it on its axis to slow it down whilst still keeping the car in picture. and, you know, the pilots of the drone are incredibly impressive. with such a range of extreme projects. i do wonder if they ever have to say no. i think sometimes people are shocked how much ideas are going to cost to actually bring to reality. and so that's perhaps the biggest stumbling block. the chris kyle stunt where he was in the in the bowl beneath the balloon. i mean, i remember people saying to us then, well, what did you say when people said, well, we want you to do this well? well, it doesn't feel that unusual for red bull to come up with that kind of an idea. so, no, it's never a flat. no, we'll always look at it. now cast your mind back to 1996, if you can.

do you remember the buzz that there was around the fact that scientists had created dolly the sheep, the world's first mammal, cloned from an adult cell? nearly three decades on and cloning technology has come a long way. in some countries, you can even clone your pet. as stephanie hagerty tells us. half a billion people around the world have a dog or a cat at home. i'm one of them. and this is my dog, zeus. and anyone who has a pet understands a special bond that we have with them. they're part of the family. but we know that sooner or later, we're going to have to say goodbye to them. they don't live as long as we do. but what if you didn't have to? what if you could clone your pet? it was back in 1996 that we learned that scientists in the uk had cloned the first mammal from an adult cell. dolly the sheep. and people were shocked and stunned. it was like something from a sci fi film. but in the past 20 years,

this technology has moved on so much it's become accessible. although the costs are high, about $50,000. people can now clone animals from livestock to show horses, racehorses and even cats and dogs. it's now possible from just a small tissue sample to clone a dog like sue's. a dog like zeus. austin, texas, is home to one of america's largest cell storage facilities for pet cloning. it's also the home of a young pet owner whose beloved cat chai died seven years ago. this is belle and my name is kelly and i cloned my cat. a lot of people think that i wanted to bring my cat back from the dead, but that really was not the case at all. ijust wanted to carry on a piece of my cat. i am not rich by any means. i'm a broke dog trainer, so i took out a loan to clone belle. cloned animals are essentially genetic twins to their original. like human twins, they can look different. it all depends on how

they develop in the womb. even their fur pattern can be different. their temperament is the exact same. so they're both bold, sassy, bossy cats with attitude, but their markings are actually different. i really wanted to be careful in the fact that i treated belle as an individual and not as just a copy of my other cat. cloning for nonscientific purposes is banned in the uk and in the eu. there have been concerns about the health of cloned animals. but the first essential step of cloning an animal tissue cultivation and storage is allowed here. samples for genetic preservation and cloning are mainly taken in the uk and europe after the animal has passed away and the first process we do once the samples arrive with us as we preserve the dna to store it indefinitely for the owner so that they can bring those skin samples back to life when they want to think about cloning to clone an animal. all we actually need is one of these little piles of skin here.

i'll place one of these piles of skin into each of these vials. they contain our special freezing media, which is really key to this process of being able to freeze the samples down to minus one nine six and retain the integrity of the dna to be able to create living cells from them in the future. the second stage is the cell culture, and that's where we try and replicate the individual cells that make up the skin sample. so the client has cultured cells ready to move on to the stage of cloning when the owner is ready to clone. we shipped the samples to the usa for them and that's where the actual cloning takes place. cloning animals is a multi—million dollar industry and growing, but it's banned in a lot of countries. and cloning today mostly happens in the us, china and south korea. the first step of cloning is a nucleation. - so what you would do is you would take eggs from some females - and you would denuclearize the eggs, turn them into a blank egg. _ the second step in cloning is reconstruction. - you would take one cell—

from the animal you want to clone and insert it right. into that blank egg. the third step is fusion - inactivation that kind of mimics what a egg and spurn would do that day zero embryo. - once that's done, the eggs get transferred into our surrogatesj and the surrogate i will have the babies. naturally, clones are very similar to the original animal, _ and the surrogate will have the babies, naturally. - clones are very similar to the original animal, j but there are some epigenetic factors. | for example, environment, - what they eat, what experiences this new clone is going i to have that could make it a little different than the original. | i was lucky enough to be able - to adopt two puppies from a litter of three because our client only wanted one of the puppies. - overall, they're very similar. i can't tell them apart, - but definitely there's one that's become kind of the alpha and i the other one's kind of the baby.

how these technology can be used for obviously conservation and the way that we can freeze cells down in order to be able to bring them back to life in ten, 20,1000 years' time quite often comes back to these very same technology. if you preserve this genetics and you can clone some of these species back, you can actually help a species that could be on the brink of extinction and hopefully stop that particular species from from disappearing. it's been 28 years since dolly the sheep was born an animal. cloning is still controversial. even now, the success rate of a cloned embryo is relatively low, which raises ethical concerns about the being of donors and surrogates as complications during the cloning process can cause pain and suffering to the animals involved. so what, clones is i mean, the idea of having to say goodbye to him one

day is heartbreaking. but realistically, could there ever be another zeus? and that's it for the short version of the programme. full length show can be found on iplayer. thanks very much for watching and we'll see you soon. bye. hello there. let's take a brief look now at the weather for the week ahead. there's still some uncertainty in the detailfor the bank holiday weekend forecast. but here's what we do know. temperatures will be more or less a seasonal average. there will be some sunny spells and in the best of the sunshine at this time of year, it feels pleasantly warm. but expect some wet weather, showers, longer spells of rain and possibly poor visibility through the mornings as well with mist and fog.

now, there was a lot of sunshine on friday for scotland, highest temperatures for the north and the west, but it's turning cloudier on saturday. and that's because this weather front is creeping further northwards, introducing cloud outbreaks of rain and quite a lot of murk to start the day as well. there will be some breaks in the cloud across northwest scotland. the warmth hangs on here. some rain further south for northern ireland through the afternoon and a chilly start across southeast england and south wales, too. some patches of fog, perhaps, but here's where we'll see the best of the sunshine. watch some afternoon showers, but sunshine helping to boost the temperature, 16 or 17 degrees celsius here. and then as we head through sunday, we look out towards the south west to see this area of low pressure to start to roll in. it's going to introduce quite a lot of cloud and eventually some showers, too. that's all going to be pushing further northwards and eastwards and across scotland, northern england and northern ireland, quite a lot of cloud with some showers in places as well, but plenty of sunshine

stretching from east anglia up through north wales, the midlands and perhaps parts of northern england by the end of the day as well. temperatures where we'd expect to see them at this time of year, 1a to 17 degrees celsius. and that leads on to a bank holiday monday. now, our area of low pressure could produce some heavy thundery downpours, perhaps across the south of england as we head through bank holiday monday. and that's gradually going to push northwards as we head through the day. there's a lot of cloud across scotland. there will be some more showers here as well, but some decent sunny spells, i think, across the north of england, although again, the details on this are always likely to change. but a nice slice of sunshine between those fronts, again, 1a to 17 degrees. but it will feel pleasant, of course, in the best of the sunny spells into tuesday. and there is a very weak frontjust pushing southwards across scotland. it's a weak cold front, some cooler feeling air with more of a northerly wind blowing here.

but temperatures really starting to climb across the south east of england and east anglia. we could get to 15 to 18 degrees celsius and then high pressure starts to establish itself from the west. so lots of dry and settled conditions as we head through much of the rest of the week. we'll start off wednesday with some low clouds, some general mist and murk as well. could be some fog patches that will all gradually lift and we will see some sunshine breaking through, perhaps some outbreaks of rain across the western isles, but generally speaking, it should be dry. we're starting to see temperatures lift into the high teens in celsius. and of course, with that area of high pressure sticking around, then these areas of low pressure will skirt around it. so there could be some showers, possibly some longer spells of rain across parts of the far north of scotland maybe. but generally speaking, further south, it is looking largely dry and as you can see marked here by the yellow, the orange colors, things are also set to warm up as we head towards next weekend. so here's the temperature outlook then for our capital cities. as you can see as we go through the week, there is a lot

of sunshine and dry settled weather to come. in fact, temperatures in south east of england could get as high perhaps as the mid twenties in celsius. bye for now.

live from washington. this is bbc news. fighting continues in gaza, but signs of progress on a ceasefire deal — the cia directorjoins talks in egypt ahead of the arrival of a hamas delegation. world press freedom day sheds light on global threats to media — with gaza the most deadly conflict for journalists. with nato leaders doubling down on their support to ukraine, we hearfrom poland's foreign

minister about western worries of russia's aggression. hello i'm caitriona perry. you're very welcome. hamas says it will send a team to egypt on saturday, in the latest negotiations on a ceasefire and hostage release deal with israel. the group said, "it's determined to secure an agreement in a way that fulfils palestinians' demands." the wall streetjournal is reporting that israel is giving hamas one week to accept the current deal, orface a ground invasion of the city of rafah. egypt, qatar, and the us are once again facilitating the talks. israel wants dozens of hostages returned home, and a temporary ceasefire before it resumes its mission to destroy hamas. as our security correspondent frank gardner explains, hamas wants guarantees of a permanent withdrawal of israeli forces and an end to the war, something israel has not shown willingness to accept.