this is bbc news, i'm shaun ley. the headlines... an admission that flying in the uk may have to be restricted because of climate change. campaigners say a rethink is essential. we know that we have got to reduce our emissions urgently and radically and expanding them is going in the opposite direction. itjust doesn't make sense. theresa may is expected to give more detail in the coming days about leaving downing street, according to the most senior conservative backbencher. the united states is preparing to impose tariffs on almost all chinese imports. fly—tipping in england is up by nearly 40% in the past five years. and councils say nobody has yet been given the maximum sentence. sweating like a nail bomb... trouble with the heartbeat...

cut to the chase... meet britain's new poet laureate — the west yorkshire born writer, simon armitage. and click investigates police deployment of facial recognition. that's in half an hour, here on bbc news. good morning and welcome to bbc news. concerns over climate change might restrict the growth of aviation in the uk, the government has admitted. a senior civil servant says ministers may have to review their strategy — including plans to expand heathrow. it follows a recent warning from the committee on climate change, which advises government, that the planned increase in aviation would need to be curbed

to control emissionsof c02. our environment analyst roger harrabin reports. flying is on the up and the government has been planning for it to continue to grow. what about climate change, you might ask? under current policy, industry will have to cut more greenhouse gases so aviation can expand. but the government is now considering a plan to virtually eliminate emissions by 2050. and a civil servant has admitted in a letter to a green group that it may have to take note of advice from the independent climate change committee, saying that although people could continue to fly while meeting climate change targets, it was not possible for aviation to keep on expanding. in the end, i think the logic of this is completely inevitable. we know that we have to reduce our emissions urgently and radically and expanding them is going in the opposite direction. itjust does not make sense and i don't think the public want to see the government committing to a plan that is inconsistent with a safe and prosperous future for all of us. any policy change may affect controversial

plans to expand heathrow. it definitely means the government will have to think hard about whether aviation can continue to grow at a time of what parliament calls a climate emergency. earlier i spoke to simon calder — travel editor of "the independent" and asked him how rapidly air travel is expanding. if you look worldwide, it is 5—6% every year, compounded of course, that amounts to doubling in 12—15 yea rs, that amounts to doubling in 12—15 years, and the uk because it is more mature as they say, is not expanding at such a rate, but clearly we are not losing our appetite for flying and london remains absolutely the world capital of aviation, way ahead of new york, tokyo, paris, dubai and beijing, with over hundred and 50 million people flying in and out of

the capital's airport. we have the ongoing battle over the expansion of heathrow, that will take a long time before we get to that stage but what are the environmental concerns about aviation? shipping is not regulated at all at the moment, for example, but that contributes to c02, as well. it is a range of things, aviation unlike shipping has more than just the effects of pumping very large quantities of c02 into the atmosphere, it also causes because of the traffic it generates, all kinds of air quality issues near airports and it generates noise, but looking at the government's view of this, the department for transport says the expansion of heathrow by building a third runway will bring great benefits for businesses and the communities, that it serves, and at the same time it will meet the government's climate change obligations but the latest report

suggests that actually if by 2050 we are supposed to be zero carbon that is very difficult to see how that will work with present aircraft technology. whenever you have to find alternative routes you often can, at least for short journeys, inside the uk, and i was surprised discover you can get a train from rome to sicily without actually getting off, but for long haul flights the options are quite limited. what do you do?m flights the options are quite limited. what do you do? if i can travel by terrestrial means i will, and interesting to note that this week eurostar made it more difficult for people to buy through tickets from london through the channel tunnel via brussels to germany and switzerland and austria, that would appear to be switzerland and austria, that would appearto bea switzerland and austria, that would appear to be a backward step, but i'm very clear about what i do, i try to fly on the most modern aircraft, they are far less polluting than some people say people who fly on 747s which are

20th century technology should pay a bit more than those who are flying on more modern aircraft, i always travel economy because although you have an impact on the environment it is not as bad as it would be by travelling in business class or indeed first class, they are far more damaging per passenger. my own carbon offset scheme, the least damaging form of motorised transport is hitchhiking so for every fight i'd take i try to hitch at least one left. two men have appeared in court — and been refused bail — as part of the investigation into the murder of journalist lyra mckee. the men — named as paul mcintyre aged 51 and christopher gillen aged 38 — have been charged with riot, petrol bomb offences and arson of a hijacked vehicle. ms mckee was shot dead while watching disturbances in londonderry last month. dissident republican group the new ira said its members

carried out the killing. houthi rebels in yemen say they've begun withdrawing from three key ports, including hodeidah which handles most of the country's imports. the un says it's the first practical step towards implementing a ceasefire agreed in december. the rebels, supported by iran, have fought a long war against a saudi—backed coalition. i'm joined now by sanj srikanthan, who's head of the international rescue committee in europe — an aid agency which has been working on the ground in yemen throughout the conflict. how important, if this is carried out, to the letter, how important is it? it is right to say if it is carried out but if it is carried out it is huge, because over 50% of the aid yemen needs and there are 2a million people who need eight, seven .5 who are malnourished, this can be a big game changer —— who need aid,

and there are 7.5 million who are malnourished. we have people trying to save as many lives as possible. in effect it will make your chance easy if you can get your own stuff through. absolutely. we are seeing children coming to us malnourished, getting treated and then going back and coming back malnourished again because there is no food in the community and place opening up and getting commercial and humanitarian access will change that —— hodeidah opening up. what impact has had -- has this had on yemen? it has displaced millions of people, this has the largest population of malnourished children under five, and the conflict is taking no account for civilians at all. neither humanitarians or civilians are being respected and our sincere

hope is that this is the first step ona hope is that this is the first step on a long track to peace but it is only the first step and there is a long way to go. you are going to go out there shortly, what operation have you got on the ground? is this a country where it is possible for your operatives to travel freely and actually get to all parts of the country? health care is our biggest service provision on the ground, reproductive health care so mothers can deliver babies safely, giving them the nutrition they need to keep them the nutrition they need to keep the children alive especially in the first five years, it is possible to work but it is very dangerous and we are having to work around the conflict, both sides are not taking account of humanitarians or civilians so it is becoming very difficult and our operations will continue with hodeidah open but hopefully we will see a lessening of the demand for our help. are you worried that because this is a unilateral move by the rebels, that

when they move out of hodeidah, other forces might move when they move out of hodeidah, otherforces might move in and it might not simply be a case of opening the port up, and the problem remains? whoever is in charge of hodeidah, they have got to respect the access humanitarians need to bring aid in, and there will be a lot of negotiation about this and we would like all sides to adhere to what they agree in stockholm and for the un to be given access to monitor what happens next. it has been a painfully slow process? we did see an intent to see this happen in every but it did not happen, but now the signs on the ground is that it is tentatively looking good but let's see in the coming days whether thatis let's see in the coming days whether that is fulfilled and the lives of people are saved. i saw in the notes that there is a vast store of grain in the port that has been inaccessible for many months, watch archers of any of that actually

being used? —— what chance for any of that actually being used?” being used? —— what chance for any of that actually being used? i think it can be used but we need to see what it looks like, but more importantly there are ships coming in with fresh aid and medical supplies, and as the international rescue committee, we can use this to save lives, that is our hope. they can come in quickly? yes, aside from the military withdrawal, assuming we have the port actually functioning, and the port authority is able to do their job, and the port authority is able to do theirjob, and and the port authority is able to do their job, and no and the port authority is able to do theirjob, and no bureaucracy preventing anything coming in. thanks forjoining us. the chairman of the 1922 committee of backbench conservative mps — sirgraham brady — says he expects theresa may to give more detail in the coming days about her plans to leave downing street. the prime minister is due to meet the committee's executive next week.

earlier i spoke to our political correspondent, jessica parker, who said theresa may still wants to get her brexit deal through parliament. we don't know for sure that she will walk into the room and say, this is the date i'm off, spread the word. that is potentially unlikely, and theresa may really still wants to try and secure some kind of brexit legacy, namely securing phase one of brexit, the divorce settlement, getting the withdrawal agreement through parliament, but some say if that doesn't happen we need some kind of unconditional timetable for theresa may's departure. graham brady chairs the important 1922 backbench committee and he has and he has been speaking to the week in westminster programme and he says he understands why the prime minister might be reticent to set an exact timetable. i don't think it is about an intention of staying indefinitely as prime minister or leader of the conservative party.

the reticence is the concern that by promising to go on a certain timetable it might make it less likely that she would secure parliamentary approval for the withdrawal agreement rather than more likely. jeremy corbyn seems keen to remind us that he is still the labour leader and not going anywhere soon and he has a new policy launched? he has a new policy regarding the minimum wage, and labour are very proud of their legacy of the minimum wage act from 1998. jeremy corbyn says that those under 18 should get the real minimum wage of £10 an hour, there should be equal pay for equal work. he is speaking at a youth event in birmingham to launch that policy. the conservatives have said jeremy corbyn cannot be trusted with the economy and what is important is that young people are in work, and business

leaders have raised doubts over this suggesting it could mean that younger people under 18 are less likely to get employed if they are being paid exactly the same as a 30—year—old who has more experience. they're the world's two biggest economies, engaged in a trade war that's threatening to escalate. china's vice premier has denied trade talks with the united states have disintegrated — despite the failure of discussions in washington. liu he said that setbacks were inevitable. the two sides have agreed to meet again in beijing. the united states has now imposed 25% tariffs on some chinese goodss — and is working to impose tariffs on almost everything it imports from there. here's our north america editor, jon sopel. bell rings a bell can signify celebration, but it also can ring out a warning and today it felt like the latter after donald trump imposed much higher tariffs on chinese goods coming into the us, and fired out a warning to the world's second biggest economy that he is digging in for the long haul. he tweeted. ..

talks with china continue in a very congenial manner. there is absolutely no need to rush as tariffs are now being paid to the united states by china of 25% on $250 billion worth of goods and products. the chinese are in washington in the hope of concluding a deal. their lead negotiator said increasing tariffs hurts everyone. translation: i came here with sincerity in these special circumstances, to engage in rational and candid exchanges with the us side. of course, china believes raising tariffs is not a solution to the problem. it will be harmful to china, the united states, and to the whole world. donald trump has often been accused of being too trigger—happy when it comes to tariffs, too keen to start a trade war. but on this, significantly, the democrats are behind him, they are urging him to remain tough. when it comes to trade and china, there is a feeling here that they have been allowed to get away with too much for too long.

the talks have broken up for the time being without agreement, the treasury secretary sounding decidedly guarded about how they had gone. they were constructive discussions between both parties, that is all we're going to say. thank you. this factory in the south of china makes wi—fi routers, millions of them, many earmarked for the us market. now, with new tariffs, those sales are in doubt. tp—link, like everyone else around the world, thought a deal was imminent, that the two sides would bridge their differences. but last weekend, the us president accused beijing of ratting on a deal to open up the chinese economy to us goods. in the middle of this are us farmers whose products have been hit by retaliatory tariffs and they are desperate for a trade deal as soon as possible. we have almost waited almost too long, so the only thing that is really going to help us is if he makes a deal and china comes in and they guarantee to buy x amount of bushels.

and us consumers, who are now going to find a range of imports costing way more in the shops. and if this carries on, it will be the global economy that will suffer. jon sopel, bbc news, washington. the headlines on bbc news... concerns over climate change might restrict the growth of flying in the uk, according to a senior civil servant. theresa may is expected to give more detail in the coming days about leaving downing street, according to the most senior conservative backbencher. president trump has ordered tariffs to be imposed on almost all chinese imports, after a second day of trade talks ended without agreement. an event aiming to reunite families separated between mexico and the united states has been cancelled after organisers said the american authorities refused to give permission. the gathering, called "hugs not walls", allowed families to meet in an area between frontier

crossings near the texas city of el paso. the organisers have blamed president trump for the cancellation. david willis reports. along the dusty border that separates mexico from the united states, families are separated. migrants who enter the united states illegally would face arrest if they attempted to cross here. an annual event offered some respite and a brief chance of reunion, until now. called hugs not walls, allowed families from both sides of the border to meet at this canal area between the mexican state of chihuahua and the american state of texas. but us border patrol has denied permits, and this weekend's event have been cancelled. translation: this is the real impact of trump's policies on the border. the agencies we have worked with have been inflexible. maria was one of many who had registered to take part in the event.

translation: i would have liked to have seen the family on mother's day. i have to accept, i can't cross the border, ijust have to accept things. thousands of migrants have arrived in mexico in recent months, most of them from central american nations where poverty and violence is rampant. president trump has declared them "threat to national security", and it was announced that $1.5 billion has been allocated from the us defence department to help fund his much—vaunted wall along the southern border. fly—tipping has increased by almost 40% in the past five years according to councils in england. the local government association said nobody convicted of fly—tipping since 2014 had been given the maximum penalty of a £50,000 fine or a year in prison because of funding pressures. the goverment says they've strengthened local authorities‘ enforcement powers. joining me now is allison 0gden—newton,

ceo of the charity keep britain tidy. your organisation has been going a long time and it has had a lot of success long time and it has had a lot of success with people using litter bins and they see the logo and they know what you are trying to do, why is it that people don't appear to understand what the rules are with fly—tipping? understand what the rules are with fly-tipping? that is a very big part of the problem, people don't understand what fly—tipping is, and a lot of people don't know the term fly—tipping. we did research with over a thousand members of the public and found 40% of them admitted to some form of fly—tipping behaviour, so that could be innocuous like putting a black bag out on the wrong day or next to the bin, which might sound like doing the right thing but local authorities cannot operate like that and if you put a few out there and other people add to it, we end up with high streets looking very

scruffy and rubbish gets everywhere. foxes love those bags. they really do, and also seagulls if you live by the sea. in terms of enforcement, there's a difference between the individual who does it and who should not do it, and the more organised fly—tipping, do you have any sense of where the growth is coming? there are two very distinct forms, that which we discussed, the ordinary household misunderstanding and putting out a piece of furniture because i think it will be useful to someone because i think it will be useful to someone else, —— they think it will be useful to someone else by the large majority of the epidemic we are seeing is the criminal fly—tipping, the vast overnight industrial waste quite often which is created by people who have contacts with organised crime, and it costs the public and private

people with over a third of farmers reporting frightening, it costs them hundreds of pounds to clear up. —— over a third of farmers reporting fly—tipping. over a third of farmers reporting fly-tipping. yes, they have to pay, evenif fly-tipping. yes, they have to pay, even if no the —— even if it is not their rubbish, they have two clear it? yes, we estimate at least that much is being paid by private people who have to clear up their land otherwise they possibly cannot cultivate it. we are in one of the most... a country with the most surveillance, with so many cctv cameras, and yet we don't seem to be catching that many people, and if we are not prosecuting them, why is that? it is expensive to pursue

people and you are right we do have surveillance but when you think about it, environmental crime is less tha n about it, environmental crime is less than 1% of all prosecuted crimes that the police pursue and there is a view that somehow this is a victimless crime. when we look to magistrates we are seeing a disappointing conviction rate and the penalties that are being issued, they don't need to be any more stronger, it is sufficient as it stands. we don't need a book but we need the book we have got being thrown at people convicted of the crime because 12 months in prison or a £50,000 fine would send the right message, but as research suggests, nobody has actually been met with that penalty. and so people are thinking they can get away with it. it is devastating for the environment, this is really hurting communities around the country. alison, thanks for joining communities around the country.

alison, thanks forjoining us. simon armitage has been named as the new poet laureate, a role that lasts 10 years. he says he wants to use the role to ensure poetry embraces major global issues, including climate change. earlier i asked him how he views the role. it has really changed, if you go back a few hundred years it was a very mysterious post, it was a job for life and on occasions people would be obliged to write to commission for royal occasions and there is still some of that element attached to it but it has really been modernised over the last two decades, since it became a decade—long appointment. it is more about rolling our sleeves up these days, some elements are ceremonial and ambassadorial, but there are other parts which are to do with the promotion of poetry and celebrating poetry and trying to encourage younger

writers to try their hand at it and to identify people who might have a future in poetry. with the title poet laureate that might open a few doors in terms of the lobbying you do on behalf of poetry and the work of your fellow poets? that's the key, the fact it is a royal appointment, it helps to raise the prominence of this post and if the role is about making noises and asking questions, lending a voice to certain ideas and ideologies, that association with the monarch i suppose is probably the reason why i'm talking to you this morning. that probably is the reason, when else would we invite a poet onto a news programme? that is a fair comment. it's a busy morning for many people, on a saturday, i wonder if you could read us something, because you say poetry should be for crazy times

as well as calm times. it's a poem about climate change and clean air, something you were talking about earlier — it's called in praise of air. i write in praise of air, i was six or five when a conjurer opened my knotted fist and i held in my palm the whole of the sky. i carried it with me ever since. let air be a major god, it's being and touch, its breastmilk always tilted to the lips, both dragonfly and boeing dangle in its see—through nothingness. amongst the jungled bric—a—brac i keep a padlocked treasure chest of empty space and on days when thoughts are smothered in smog and civilisation covers the street with a white handkerchief

over its mouth, and cars blow kisses to our lips from theirs, i turn the key, throw back the lid, breathe deep. my first word, everyone's first word, was air. the new poet laureate there, simon armitage. now it's time for a look at the weather with helen. the weather is starting to settle down as high pressure builds through the weekend and i know that is not good news because we need the rain but there is the hope of some rain today, we have showers surround across eastern areas but they are hit and across eastern areas but they are hitand miss, across eastern areas but they are hit and miss, the odd intense shower and the odd rumble of thunder but they are few and far between. there will be more sunshine and temperatures will be higher, it feels chilly because of the northerly breeze which will continue today but then it eases away overnight. the showers will ease tonight as the high pressure fully establishes itself across the uk so it will be cold with a touch of ground frost and mist and fog to

greet us first thing sunday morning. apart from a very late and isolated show in the afternoon it looks much drierfor most show in the afternoon it looks much drier for most and tomorrow with good spells of sunshine and a lighter breeze, we are cutting off the northerly breeze, it will feel warmerfor most, as the northerly breeze, it will feel warmer for most, as well. hello, this is bbc news with shaun ley. the headlines: concerns over climate change might restrict the growth of flying in the uk, according to a senior civil servant. houthi rebels in yemen say they'll begin withdrawing from key ports today, opening a lifeline for millions of people facing famine. theresa may is expected to give more detail in the coming days about leaving downing street, according to the most senior conservative backbencher. fly—tipping in england is up by nearly 40% in the past five years. the local government association says nobody has yet been given the maximum sentence.

sport and for a full round up, from the bbc 0n on bbc 0n bbc one, we will bejoined by the bbc one at lunchtime news. sport and for a full round up, from the bbc sport centre, here's mike. good morning. the sun is shining in hampshire, where england's cricketers made a promising start, to the second one—day international at southampton. put into bat by pakistan, they reached 115 before losing their first wicket — johnnie bairstow out for 51. jason roy has also made a half—century. they're now 116 for 1 in the 20th of their 50 overs. you can follow text commentary on the bbc sport website, where there's also live coverage of ireland's tri—nations match against west indies. it will be a field of international stars, this evening, as two european giants meet in newcastle, in the final of rugby

union's biggest club competititon, the champions cup. leinster are the defending champions and they're hoping to lift the trophy for a record fifth time. saracens have won all eight of their matches, in this competition coming into the final — and they're aiming for their third title in four years. we have a load of respect for leinster and the quality of the player that they have. it is stacked with british lions and international players. the quality of the coaching they have... it is obvious that the experience that they have and we have some big match experience ourselves and i think that's why everyone is so excited. when you go for match ups across the board, both teams are full of internationals and if there is an overseas player he's normally an international as well. i think it is a fantastic testimony to both clubs that we have both reached the final and everyone is looking forward to it.