But it is turning colder. There is a band of rain. It could be heavy in scotla nd band of rain. It could be heavy in scotland and Northern Ireland. South of that we have some blustery winds. This is where we have the mild air once again. To the north of the band of rain, the area is getting a bit chilly. The rain band continues to push its way southwards on monday. Probably getting into more southern parts of england during the afternoon. Here we still have temperatures of 11 or 12. The hind that the colder ed dix down. Funniest guys further north and showers in the north west of scotland. Sunniest skies. The chance of frost in the south and south east on tuesday. A bright start some sunshine. Later we will get some rain in the north west. This is bbc news our latest headlines. Police have released a cctv image of a man wanted over a car crash that killed three teenage boys at a west london bus stop on friday. The Prime Minister has come under new pressure from her backbenchers over brexit negotiations amid reports of a looming leadership battle. The leader of russias Main Opposition Party is arrested at a rally calling for a boycott of the president ial elections along with more than 200 other protesters. His lawyer says he has now been released without charge. The founder of ikea, ingvar kamprad, has died at the age of 91. He started the business when he was just 17. Now on bbc news, its the travel show. This week on the show the sinkholes left behind by the shrinking dead sea. It is devastation, but it is also quite beautiful, isnt it . Travel tech you can talk to. I have packed it. Can you say it again . And im in mexico to see one of the worlds most impressive migrations. First up this week, were in the resort of ein gedi in israel, on the banks of the dead sea. This vast, salty lake is one of the regions top tourist attractions, but its one thats slowly disappearing, leaving behind a scarred landscape, which we send jo whalley to explore. This is the lowest point on earth, and people come here from all over the world to experience the surreal sensation of floating about in the hyper salty waters. But, in recent years, the dead sea has been shrinking back at a rate of more than a metre a year. The phenomenons being caused by a sharp decrease in the amount of waterflowing into it, as the countries along the river jordan, the dead seas main source, harness the waters flow for industry and farming. 30 years ago, the dead sea came all the way up here, right up to these beach umbrellas. But now the seas receded so much that tourists need to be passed by tractor to the waters edge. Its a distance more than a mile. The tractor rides might be a fun novelty for tourists, but theyre expensive to run. And the shrinking sea has caused an even bigger problem as the waters recede, huge underground salt deposits are left behind, and when the salt dissolves, the ground above it can collapse without warning, causing sinkholes. Yariv has seen the impact first hand. This is the main road, and the main beach, and the main touristic place that used to be. I can see how the roads just all given away. Yeah, yeah. Everything just collapsing, everything just falling apart. Yeah. Two years ago, this road, which was one of the countrys major highways, was closed and rerouted, after the surface started to sink. Its now an enormous hole. Its crazy, it looks like an earthquake. It is. Yeah, unfortunately, it is. Yeah, thats uh. Basically, thats whats going on. The ground is just falling apart. And its all fractured, all the way down there. And its still active. Everythings collapsed into that hole. Yeah. And this is one of the and this is part relatively small. Well not so lets say not so big. Thats a small one . Not so big, yeah. Hah its not a big one, yeah. How many sinkholes are there now . Around. More than 6000, 6500, lets say, around 6500. When did the first hole happen . The beginning of it was the late 80s. It was a phenomenon a nice one, interesting very interesting phenomenon. But itjust escalated very much and very fast. And once you bring people next to it, people who live, people who work here, and tourist places, then you just have to leave the place and then you get the biggest damage that you can get. This tourist resort used to be one of the dead seas few public beaches. Two years ago, it had to be evacuated when the ground became too unstable. Wow. The whole building had to be abandoned. Yeah. In a short very short notice, we had to just take everything, pack our bags, stuff, equipment, and just leave. It looks like a war, so. There is a plan to reverse the fortunes of the dead sea by pumping water into it from the red sea, over 100 miles away, but that could take many years, and no one knows for sure if it will work. In the meantime, the people here are determined to rebuild, using satellite mapping to assess where new holes might open up. Um, actually, what you see there, like a big lagoon, is a chain of sinkholes. Eli raz helped develop the satellite system. Hes been studying the sinkholes for the past 17 years. So is it safe to explore this area . It is quite safe to somebody who knows where to go, somebody who knows the nature of the sinkholes. For somebody who doesnt know nothing at all, it could be dangerous. Eli has started taking groups out to safely view the sinkholes. He wants something positive to come out of the problem. First of all, for the awareness of people to the dead sea crisis, but also, on the other hand, to give explanations. People are willing to know whats happening. And then we have also the other side of the problem. People are amazed by the scenery. It is beautiful. And thats why its very important to let the people an access the sea a safe one. Nowadays there is no safe access. And i think that we are losing something. The idea is for people to be able to see the geological wonders that have appeared as the dead sea has receded. I just want to show you my diamonds. Oh, wow. Oh my gosh. They are actually crystals, idiomorphic crystals of salt. Can i keep this . Yes, of course. This is, you know, a gift from. Thank you very much. A giftfrom. A gift from the dead sea thats incredible. And it isntjust salt diamonds that are formed along the shore. And here is the purest. Oh wow. They form just on the slope. And the waves roll them up and down. So diamonds and pearls. Diamonds and pearls, yes. Youre spoiling me. It is amazing to grab handfuls of these pearls. Theyre so beautiful. Is there a sinkhole near here . There are sinkholes, of course, all along the coastal plain. And can we go and look at one . Yes. Ok, lets go, then. 0h is that it . All of that . Yeah. This is one of the biggest sinkholes, yeah. Its absolutely enormous. This is about 40 metres, 50 metres in diameter. Wow its filled with water, as well. This is the groundwater. Iam a bit scared, here, eli. Being tentative. Not exactly sweet water, with the ability to dissolve salt. Yeah. Its like a lagoon, isnt it . Its like a lagoon. Such a lot to take in, because there is devastation, but it is also quite beautiful, isnt it . Always better to look at the bright side of the problem, yes. Its the eerie beauty of this place that is hoped can be used to attract more tourists to the area and repair some of the economic damage that has been caused by the sinkholes. If youre planning a trip to the dead sea, you dont have to worry about a sinkhole opening up under the beach. The affected areas are clearly signposted, and should not be entered without guidance from an expert. Still to come on the travel show. Im in central mexico to see one of the worlds greatest wildlife migrations. Wow normally were not allowed to get this close so dont go away. The travel show your essential guide, wherever youre heading. Wheres the closest train station . Wheres the closest pizza restaurant . Whats the weather going to be like later . Voice activated tech has exploded in popularity in recent years, with gadgets and apps that use speech commands becoming a big part of our lives and our homes with little little devices standing by as an in house personal assistant. But now, smart speakers want to change the way you travel before youve even packed your bags. Google home has launched a packing assistant, bb bot, that has been launched by airline klm. Im really intrigued to give this a go. 0k, google, talk to klm. Where are you going . Tokyo. I have made a personal packing list that is perfect. Lets start with travel essentials such as your passport and bank cards. I have packed it. Make sure to pack enough underwear for seven days. Underwear, very important. Underwear. Ive packed it. Make sure to pack enough underwear for seven days. Ive packed it. Ive missed what youve said. Im coming. Pack pants for seven days. I packed it. I didnt get that. Can you say it again . Ive packed it. Sorry for asking, are you a man 01 a woman . Woman. Pack enough skirts for seven days. Id bring my sunglasses if i were you. Ive packed them. Sorry, can you say that again . Ive packed them. Sunglasses are in the bag. Just dont wear them at night youre not the guy from the song. Have a good flight. Right im all packed and good to go so, overall, id say bb is pretty helpful in making sure you pack the essentials and you dont forget anything. But the entire process felt longwinded, you cant interrupt her when shes speaking, i couldnt find a way to go back, and after joke four or five, it got a little bit annoying. Its very cool that it uses artificial intelligence, it all feels very futuristic, but for now, i dont think im ready to give up a good Old Fashioned list. 0ther smart speakers are getting in on the travel act, too. Matts popped around to show me how amazons alexa can help with flight and hotel searches. Welcome back. What would you like to do . Alexa, speak to kayak, search for flights to paris. Please tell me when you want to fly out. In one week. When do you want to fly back to london . Return in two weeks. And off we go. The least expensive flight from london to paris is a nonstop flight on easyjet for £75. So its a great way to get a kind of rough ballpark on the kind of figures youll be paying to go on holiday, which is quite handy. Delivering that through voice, rather than having to type it out and play with calendars and all of that stuff. Yeah, makes it effortless as well, it . Absolutely. In the us right now, you can actually book your hotel. I dont know how i feel about that i need to see what im going to stay in. Dont people want to look at what theyre investing in before they go on holiday . I guess if youve been somewhere before, or feeling adventurous. If you like taking a few risks yeah, if youve ever done a bit of travelling, you just turn up to a random hotel or hostel and, you know, go on a locals word, maybe. So would you book your hotel through alexa . Im definitely going to try it. And heres a speech activated gadget you can try out anywhere the gopro hero 6 black. When youre using your hands to, lets say, cycle or drive, or cant reach to touch the buttons on your camera, being able to bark commands at it in order to control it is an absolute godsend. All i have to say is gopro, start recording. So there are loads of commands at your disposal you can get it to take photos, you can set it to shoot in burst mode, and you can even record a time lapse. If you think youve filmed something thats particularly standout, you can get it to mark the clip at that exact moment by saying gopro highlight or, if youre a bit down with the kids, that was sick when you want to stop filming, all you have to say is gopro, stop recording. You wouldnt know it to look at, but these hills are just a couple of hours drives from mexico city, one of the worlds biggest urban conurbations. This is the transatlantic volcanic belt, but its not volcanoes weve come to see. Im almost at summit of bald peak, and you can tell im quite out of breath. We are about 3,000m above sea level. The airs thin, its quite cold, but we are beginning to see monarch butterflies. Every winter, millions of butterflies fly for around two months from canada and the us to a few patches of High Altitude forest here in mexico. Most are located in the state of michoacan, but this place is slightly east of there, in mexico state. Cerro pelon is the least touristy site, and somewhere you can truly be alone with these creatures. Wow normally were not allowed to get this close but, from this distance, i hope you can see there are millions of monarchs clustered in black clumps on these fir trees. What i find absolutely amazing about this insect is they travel 4,000km from canada, the united states, down to this particular forest. Its the longest migration undertaken by any insect. Scientists only recently discovered that they use the sun to navigate to the same reserves every year, where they rest, feed, and then find a mate. In recent years, the populations have dwindled, thanks to the destruction of habitats in the us and canada, and deforestation here in mexico. One study says the numbers have gone down by 84 in the last 20 years. The fear is this one more bad winter, and the entire colony could be gone. Its been really bad, you know . Two years ago, we had a snowstorm that killed a lot of butterflies, you know . It was it was really, really sad to see, like, these clusters the way we saw they are. Mm hmm. But those butterflies were like, dead. And they still like the looked like they were hibernating, but they were not hibernating anymore. They werejust dead. They were frozen . Yeah, frozen, cause of the weather. And what happens if theres another terrible winter like that . Well, i hope it will not be the end of the butterflies. The population went down a lot. The village at the foot of the hill depends largely on the butterflies for its existence. Its tiny, though the people are instantly welcoming. There isjust one b b, run byjoel and his american wife, ellen, which they set up in an effort to make day trippers stay here for a little bit longer. And wouldnt you know it the one local restaurant is run byjoels mum, rosea. And why do you guys love the butterflies . Why are you here, doing. . Well, you know, thats how i met ellen. Thats how we met. We met in a storm of butterflies. But anyway, you know, like, my dad, he was a forest ranger he retired from being in those mountains for over 30 years. When we met, there was nothing here. People came on day trips, people came from far away, they paid outside operators to come here, and none of the money stayed in the community. So really what we wanted to do, starting our busines, was have more people come here, stay in the community, stay longer. And the numbers are much lower than they used to be in the area, with the butterflies . Youd see them on the roads flying in a river. Sometimes we see that in some places, but not as often as i think older people talk about, seeing that. Ive only been here for four seasons, so in four seasons, its kind of. Its actually gotten better, the numbers have gotten slightly better in the last four seasons, but its still dramatically lower than what it was. Than it used to be. Yeah. This is lusher and greener than you might expect from mexico a Peaceful Place to see the migration. And heres a glimmer of hope for the people of macheros. While numbers are still critically low, the signs from this year and the last is that the worrying decline appears to be stabilising. Thats all for now. Join us next time, when. Rajans at the Sports Festival in abu dhabi, trying to get to the top of one of the worlds highest sand hills, the moreeb dune, which means terrifying mountain. Wow that was fantastic you know what . Ive been looking at one of the worlds highest and steepest sand dunes for a while now. I really want to reach the top luckily, ive got myself a lift. Woah woo in the meantime, make sure tojoin our adventures on the road by following us on social media. From myself, and the travel team here in mexico, its adios. Hello, good evening. A mild weekend will give way to something chilly over the weekend. This band of rain will be pushing its way southwards overnight. Some heavy rain for a while across scotland and Northern Ireland and later coming into north west england and north wales. To the south, a bit cloudy with blustery winds. Very mild to the north of the band of rain, we have some chilly air. The band of rain continues to push southwards on monday. The last of the mild air getting squeezed into the near continent and something milder will follow on behind. We head into the mild a the morning. Ill start once again across southern parts of england and wales, across to lincolnshire where it will probably be dry for the most part. Mid north wales beginning to see some rain coming in. Some heavy rain at over the hills of north west england. The hind that, we are into the chilly air where there are some showers around. It is just about cold enough to give some snow over the Higher Ground in scotland. This band of rain continues to push southwards through the day. In the afternoon there will be some gusty winds for a while. We will get some late sunshine in the midlands. Sunnier skies in the north west. A range of temperatures on monday. Still mild in the south. As the rain clears away, skies clear as well and it will be chilly on early tuesday. It is across southern and south eastern areas where in the countryside there may be a frost around. Here, a bright start with some sunshine on tuesday. Through the day, while for many of us the winds are light, we will see cloud start into increase. We have some rain later on in the day. The rain in the south west is a bit half hearted. The more significant rain comes back into scotla nd significant rain comes back into scotland and Northern Ireland. The weather front sweeps its way across the whole of the country overnight, pushing down another plunge of cold air. The winds coming away from the north west. This is colder air than we will see on monday. It is turning colder from around mid week onwards. It will feel cold in the wind. There could be someone tree showers. Is there could be some wintry showers. This is bbc world news today, im geeta guru murthy. Our top stories thousands demonstrate across russia in support of calls by the Opposition Leader for a boycott of president ial elections in march. Alexei navalny is himself briefly detained. Alexei navalny is russias most prominent opposition figure and Vladimir Putins most vocal critic. He has been barred from running in the president ial election, he is now being arrested by police. Ingvar kamprad, the brains behind the ikea furniture empire, dies at the age of 91. And a dramatic rescue for a french climber from a deadly himalayan mountain. But the search for her polish climbing partner is called off. Also coming up, a tearful Roger Federer wins a record breaking 20th grand slam with a five set victory over croatias marin cilic