the spanish government says the terror cell behind the recent attacks there has now been broken up. but a police manhunt continues for the driver of the van which killed 13 people in barcelona. spain's king and queen are to attend a special mass on sunday in honour of the victims. tens of thousands of people in the us city of boston have demonstrated against a rally by the far—right. the small turnout of supporters for the right—wing "free—speech rally" had to be escorted away. police made a number of arrests after scuffles with what they called anti—police agitators. at least 23 people have died and more than 60 injured after a train derailed in uttar pradesh. the train had been on its way to the religious town of haridwar, in the foothills of the himalayas. it's the fourth time a passenger train has suffered a major derailment in india this year. professor stephen hawking, one of the world's most famous and foremost scientists, has launched a stinging attack on the government over the nhs. he's accused the health secretary jeremy hunt of "cherry picking" evidence to justify the creation of a seven—day nhs.

mr hunt has rejected that and accused the nobel prize winning scientist of spreading falsehoods. sarah campbell reports. professor hawking acknowledged that he would not be here today were it not for the expert care he received at the hands of the nhs, but he is concerned about its future and he did not pull any punches, accusing the health secretary of abusing science, of cherry—picking studies in order to win the argument over whether levels of care at weekends in hospitals are dangerously low. hunt has cherry—picked research. speaking as a scientist, cherry—picking evidence is unacceptable. applause. ..citing some studies but suppressing others to justify policies that they want to implement for other reasons, that debases scientific culture. the issue of a seven—day nhs week

has proved toxic in relations between the health secretary and much of the medical profession in england. it was at the heart of many of the recent strikes that led to cancelled operations. in 2015, jeremy hunt stated that 6000 people die each year because of a monday to friday culture in the nhs. jeremy hunt has never shied away from taking on the medical profession and it seems he is not shying away from taking on arguably britain's greatest living scientist. stephen hawking expressed concerns over and increasingly privatised

nhs. the health secretary said there is. -- nhs. the health secretary said there is. —— this. at the event itself, the tone was much less confrontational. the system of a taxpayer funded nhs free at the point of use and based not on the ability to pay is a principle we have to fight for and uphold. that point was made clearly. it is something all political parties have committed to. the organisers wanted to spark debate over the future of the nhs. that has certainly happened. sarah campbell, bbc news. and now it is time for the travel show. india, 70 years after independence. this emerging world power of more than a billion people is still changing.

i'm on a journey to two extremes of this vast subcontinent. crystal, ha rd crystals. white salt. can probably taste it. i began in gujarat, in the far west. this is genuinely incredible, i'm in heaven. pretty crowded. this week, i've travelled 2000 miles over to the north—east. i'm on the banks of the mighty river brahmaputra, and about to go to a very spiritual place. it's one of india's lesser—known regions. we're really high up, and just to my right, the border with bangladesh. a part of the country which prides itself on its traditions. he makes it look so easy. it's incredibly difficult.

but it's also looking forward and embracing progress. so now, i'm on my way to go and see assam's very own eco—warrior. it is going to be an incredible adventure. india's north—east, a collection of eight states, almost cut off from the rest of this vast country, but for a tiny strip of land. at partition, a large swathe of this region was sectioned off, to become east pakistan, which later became bangladesh, leaving the indian area landlocked. it's geographically and culturally out on a limb. this is frontier country, little—known to tourists and other

indians alike. they call it the land of cloud, that's because of the severe monsoon season. hilly, remote, the area so crisp and fresh, and the view, simply spectacular. it's this cool climate that made the state of meghalaya and its capital, shillong, that made it a popular retreat for the british during the colonial era. they dubbed it the scotland of the east. it's pretty crowded! what about the city today? there's only one way to find out. i take a bus into the city centre. so it's a modern industrial town these days, shillong.

whoa, feel it! i think those breaks may need a bit of work. so tell me, what do you think about shillong. this is your home city. what do you think about this place? the culture here is so different. you see the people here. it's not like the rest of india. more than half of the population of meghalaya belong to the khasi tribe, and here at the british—built polo ground, a traditional british sport is thriving, but it sure ain't polo. every afternoon, hundreds of people

gather from all around to take part in a really interesting daily ritual. this is called teer, derived from the hindi word for arrow. they target is mounted and 50 archers have just two minutes to hit it as many times as possible. the significance of the sport dates back to the early 1800, when khasi warriors defended their homeland not with guns and swords but with bows and arrows. i'm aiming forthe target, obviously.

the small one. why is it going to the ground like that? spectators get involved by taking bets on the number of arrows that hit the target. crucially, it's only the last two numbers of the total score that matter. they are all added up, and the last two digit will be the result. 690, five arrows. meghalaya became one of the few states to legalise gambling in 1982. people here are very superstitious. they'll dream about

their dead family. a dog, a cat. and they'll try to make it into numbers. so i have 200 rupees of my hard earned money here. i want to go and gamble, can you show me how to do it? let's go to one of these counters. i want to gamble on a lucky number. two digit, lucky number. i'm going to go for... 39. and i'm going to put 100 rupees on 39. and on my other bet i'm going to bet on... 77, can you fix it so i win(!) laughter that depends upon your fortune. i had a dream last night, i had a dream... that a strange dog walked past me, and that dog had the number 39 on it, is that the kind

of dreams we have. wish me luck. it's a tense moment as the numbers are counted... 310, 320... and my dream turns out to be... ..a shaggy dog story. 77 was my number, 97 is the result. still, two of my lucky numbers, nine and seven. next, i head out the city to the region's famed khasi hills and villages. incredible to think that despite landscapes like this, the north—east is one of the least visited areas of india. but things are slowly changing.

we've been travelling out of shillong into the countryside towards the bangladesh border for about two hours, it has been pretty bumpy and rough roads until suddenly, we have reached this bit and it is beautifully smooth road, would not look out of place in a major town. we are heading towards a village which has a really interesting reputation. the khasi hills are the only place in the world that you will find a bridge grown from the roots of the indian rubber tree. 0r ficus elastica. 1840. this bridge was meant for the villagers to cross over the river when they go back to their daily life. during that time there was no partition, no bangladesh, no pakistan, so we had that link. during monsoon, the khasi hills are hit by record—breaking downpours, more than 20

feet of rain in a month. these are some of the wettest places on the planet. but people here have found an ingenious way to harness nature in order to prevent the village being cut off by floods. just tell me what they are doing right now. now they are tying them, to cross on both sides of the river, so that the roots of this tree will be woven along here. bamboo acts as a scaffolding, which helps connect routes from trees growing on opposite river banks. this is skilled and occasionally dangerous work. thanks to continuous repairs, bridges like this have stood firm for generations.

and will probably remain for many more to come. so we leave meghalaya and head to assam. passing through some of the 25,000 tea plantations that have made this region world—famous. we're on our way tojorhat, a few hundreds kilometres from india's border with china, and thejumping off point for the next adventure. i'm on the banks of the mighty river brahmaputra, and about to go to a very spiritual place, the island of majuli, one of the biggest river islands in the world. now there's 150,000 people on that island, and only six ferries a day, each one is really crammed. just looking at the list of prices for all the different categories: passengers, 15 rupees,

that's ok, that's reasonable. then you go down, pass the vehicles, animals have today, buffalo has to pay a5. bull, cow, 30. and then the poor elephant has to fork out 907 rupees! perhaps fortunately, none of these creatures were travelling with us today. and incredibly, after a few last—minute panics, we are set to go. i climb onto the corrugated aluminium roof tojoin men who do this trip day in, day out. starting in tibet, the brahmaputra river is nearly 2000 miles long, second only to the amazon, in the volume of water that rushes through it. interesting game of cards going on here, i think

they are playing whist. i'd like tojoin in. but it may be a private game. high stakes. we arrived at majuli and it is turmoil again trying to get off the boat. to avoid the queue, there is a sneaky way out, which involves climbing onto another boat and going down that way. you know what, i think i'm going to take that one. well, he we are, on land, doesn't look quite as spiritual as i imagined, but if you look away into the distance, it'sjust one big flat land of desert. let's see. the island is home to 22

monasteries, or satras, initially established in the 16th century by the assamese guru, sankardeva. boys are instructive from a very young age in the religion that he preached, vaishnavism, an offshoot of hinduism. the monks are celibate and according to their beliefs they worship only one god, follow a vegetarian diet, and reject the caste system. and here, the doctrine includes this special art form. this form of classical dance is now

recognised by the authorities as a genre in its own right. many of these monks have performed around the world. that was amazing. thank you very much indeed. i know you spend a lifetime learning the skills of this, but can i have a go, can i try? arms through here...? very good.

thank you so much. one, two, three, four. there are 64 positions in this classical dance and i'm having trouble with the first two. it's very difficult. one, two, three... without the grace, as well. no grace whatsoever. he makes it look so easy. and it's incredibly difficult. i'm going to leave it to the experts. sometimes you have to give up and let them carry on. an exquisite performance. but there's one problem, one very big problem,

and that is, that this island may simply not exist in just a few decades time. hard to believe at the moment but there is a genuine worry that majuli will be submerged and destroyed within 20 years. in the last 70 years it has shrunk in size by two thirds. and a majority of the original 65 monasteries have gone. every monsoon, the brahmaputra river swells, eroding the terrain around it. bit by bit, land is disappearing. but there is hope. so now, i'm on my way, in a tractor, to go and see a man whose life ‘s

mission has been to tackle the flooding that has afflicted this island. he is jadav payeng, basically assam's very own eco—warrior. sadly, these areas that get completely deluged, when the monsoon hits, there is some water there, we have to cross... for the last 36 years, he has taken on an extraordinary challenge, to save this land from vanishing. and so, his lifelong calling began. jadav is known today as the forest man of india. he began planting trees so the roots would bind the soil,

soak up excess water, and prevent the land from being eroded by flooding. from a barren landscape, he has created a forest the size of new york's central park. and he feels this will be more effective in saving nearby majuli then following government flood prevention schemes. so we are now going to do the ritual that every guest that comes here is asked to do, which is to plant a tree. what kind of tree is this? i'm going to put this in here...

it's good. he has spoken at environmental summits all around the world, and his roll call of guests is equally international. i do know that everyone who plants a tree, when it grows, they put a plaque down with their name on it, and i'm going to have that privilege, fantastic, thank you. and so to my final day in assam, and a different kind of ritualistic celebration of nature. if there's one repairing theme throughout my trip

in the north—east, it's the sense of community, everywhere, really, and there's nothing better to illustrate that than this... a local village going down to the river, to celebrate harvest. this community was started in 1939 by a young woman who came from the mountains in search of food. i believe she found that this place was better for her because it is coated in water, and civilisation needs water, she brought friends and family here, followed by a brother. the entire family of her own clan... all from that one woman? really, fascinating, wow. this is a much—loved annual celebration and people of all ages gathered to mark in, using fishing methods that have been passed down the generations. then you pull it towards you...

pull the stick... and look! you can see this! it's full of fish, it full of fish. this is today's catch... wow! that is pretty good. and this, you will cook, now? excellent. so my trek across india from border to border is almost over, and it's been a realjourney of discovery for me off the beaten track. this isn't india "on tap", instant gratification, which some people are accustomed to, but the rewards, if you make the effort, are immense. asnake?!

can they bite? yeah, it does. it bites. is it poisonous? no, not much. not much?! laughter can i get out now? a few days ago hurricane in kurt was of the united states but since then it has been going north. —— gert. it is racing across the atlantic. for most of us today is going to be a decent day with plenty of sunshine around. for most of us it stays

drive with temperatures into the high teens. light outbreaks of rain and drizzle as we go through sunday. later in the night across northern ireland as well. this band of rain tied into this with a system pushing north, allowing warm air into the south of the uk. that's your latest weather. welcome to bbc news, broadcasting to viewers in north america and around the globe. my name is gavin gray. our top stories: spain's government says the terror cell behind last week's attacks has been dismantled. but a massive manhunt continues for one key suspect. several members of thejihadist cell came from this small town in the pyrenees. a shocked community searches for answers. tens of thousands march in boston

in opposition to a planned right—wing rally. president trump applauds the protestors for standing up to bigotry and hate.