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america. s the bbc investigates reports of civilian deaths from an israeli raid on a northern hospital as they launch a new operation in central gaza. a stark warning from the u.n. on climate change as the earth enters a dangerous warming threshold. and a boeing story -- boeing star liner rocket blasts off, carrying crews to the international space station. welcome to world news america. israel says it has launched a new military campaign targeting hamas in central gaza where there are reports of intense bombardments in urban refugee camps. at least 70 dead bodies have been brought to a hospital in

the area and hundreds have been wounded. one charity says most are women and children. these strikes come amid reports of mass graves found in the ruins of a hospital, which was rated for a second time in march. hundreds of bodies were recovered. in israel -- and is really spokesman says there were no signs of casualties but the bbc has found that there were people killed. a report -- a warning, this next report is difficult to watch. reporter: amid ruins, the reek of death. palestinians found in what was once gaza is the hospital. it was dramatically destroyed. four mass graves containing hundreds of bodies have been dug

up, prompting international calls for an investigation into possible war crimes. there are reports of suspicious fines. >> we have discovered bodies of women and children and people without heads as well as body parts. reporter: israel's military says they have excuse -- exhumed bodies as they search for hostages seized by hamas. but some of the dead were patients. one believes his mother died of malnutrition and dq -- malnutrition and dehydration. her corpse was badly decomposed. >> she had been wounded in november. reporter: israel blames any deaths of patients on natural courses but the who say those trapped endured horrific conditions. >> during that siege, 20

patients died. there were patients who could not get oxygen or proper medication. and food and water, there are stories that 15 people had to share one bottle of water. reporter: reports show that over two weeks, it killed over 200 operatives. >> this has become a main terrorism command center for hamas. our top was precise and surgical. reporter: but battles spread to nearby streets and witnesses say many civilians, including entire families, were also killed by israeli airstrikes and snipers during the raid. a dedicated surgeon was one of those shot dead close to the hospital where he worked.

i spoke with a top british surgeon who helped train him. >> he was not just hungry for knowledge, he was a very gentle man and someone all of us would want to have as our doctor. reporter: he was not on shift, at home, when the forces returned. after four days under siege, he tried to leave gaza on foot with his mother. 11 days after his disappearance, his father said, they found his decomposed body. israel's military says it is not aware of the deaths of the surgeon on his mother. -- and his mother. many others are searching for loved ones missing since the raid. forensic experts are unable to get to the site and dozens are mostly focusing on finding the dead and giving them proper burials. that adds to worries the full truth of what happened here may

never be uncovered. >> the bbc asked u.s. state department about this report. spokesperson matthew miller said he was unfamiliar with the details but the administration was looking into a number of incidents inside gaza to determine whether israel had complied with international law. tensions continue to flare along the northern border with lebanon, raising concerns about a wider war. several were injured after rockets launched by hezbollah ignited fires. in response, netanyahu threatens intense military action against hezbollah as he visited a military base close to the lebanese border. >> today, the land was burning here and i'm glad you put it out but the ground was also on fire in lebanon. whoever thinks they can hurt us and we will just sit by is making a big mistake.

we are prepared for big action in the north. one way or another we will restore security. >> and clashes grew out in the -- blew out in the old city. police arrested four people for attacking journalists during a parade. the event celebrates the capture of jerusalem in the 1970's. several marched through the streets in the muslim corner and that was seen as provocative by some. one said this year's celebration sent a message to hamas that jerusalem is hours, and our police was -- our correspondent sent this update. reporter: thousands came to the old city of jerusalem for the jerusalem day celebration on flat march, a controversial celebration marking the capture of east jerusalem by israel in the 1960 seven war. some anti-arab slogans were being chanted by the crowds and

some were arrested after throwing bottles at journalists. we did not have any major incidents during the march. there was a very heavy police presence, 3000 officers deployed. this is a very controversial event. sometimes things turn violent here. the fact that this march goes through the muslim quarter of the old city is seen by many as a provocation and this year, tensions are high because of the war in gaza. this was the first celebration to happen after the hamas attack's on october 7 but there have not been reports of major incidents during the march. >> this comes as meteors -- mediators convened in delhi. -- doha.

david is the director of the program at the washington institute. looking at the latest negotiations, we understand hamas leadership demands a permanent end to the war. what will that mean for negotiations? >> that's a great question. right now, i just checked with someone senior in the administration, the u.s. is waiting for hamas to respond, which is supposed to be related by qatar. negotiators are meeting their. -- there. we do not know if we will get a clean yes from hamas, or if we will get a no, we do not know. the administration i think feels that the president's speech was an effort to try to begin the process of hostage release,

prisoner exchanges. that will ultimately lead in a withdrawal but the actual withdrawal date would have to be negotiated on israeli conditions and american conditions and hamas so the u.s. just wants to get the process started, get the six week pause going. you can use that time to give it to riyadh, where the administration believes there is a great deal to be done. but there is worry that if things get bogged down in a lot of details that the parties will never agree because it is a zero-sum. >> let me ask you about the israeli side. the prime minister was already under pressure to present a plan for ending the war. do you get a sense which way he is leaning on this proposal? >> right now i think he would be

happy to put the ball in hamas course. -- court. he is not completely for it but he does not want to come out and offend the president that he is completely against it so i think he seems happy that the ball is in their court. the test would be if hamas said yes, he might have to choose between yes and his government and that is something he prepares -- he prefers not to do. >> what about president biden indicated in his comments when he outlined the proposal a week ago? he said israel had already degraded the capabilities of hamas so much that they cannot launch an attack. is that really the case? >> it is not. what he is saying is, the implication is, you already won, so we can start postwar with hostage release but the problem

is in a lot of these places, israel is going back to a place for the third or fourth time. israel fears that yes may be big major operations will be done when rafah is done but they will have to be smaller operations to ensure that hamas cannot reconstitute so that is where it gets fuzzy. this is where hamas is saying, tell us when the withdrawal date is, and the more you want clarity on that, israel will say the withdrawal date is a function that israel knows in these small places with smaller units, hamas cannot reconstitute. >> one quick last question and we have 45 seconds. was it a mistake from president biden to outline the proposal and put both sides under pressure? >> it's a great question.

i tend to think the president is worried that he gets all of these whispers into his ear but when push comes to shove, the parties backtrack. so by outing the parties, he is trying to create a new baseline where the differences are much narrower. there is a risk to that because people might not share with him in the same way if they think everything is kept private, now they think i can talk to you privately and now people don't think it will be kept private so it is a risk but the president thought the other way was not paying off to a deal so he probably had to go for broke, so to speak. >> david, always get -- always great to get your insights. more than 34 million americans and western parts of the u.s. are bracing for extreme heat and clement scientists warned the

rate at which human activity is warming the planet as an all-time high. the threshold of 1.5° celsius above preindustrial levels, crucial for avoiding catastrophic impacts of climate change, could be surpassed in the next five years. antonio guterres urged word -- world leaders to cooperate to limit the rise in global temperatures. >> it means we need to fight harder now. the truth is, the battle for 1.5° will be won or lost in the 20 20's under the watch of leaders today. it all depends on the decisions those leaders take or fail to take, especially in the next 18 months. it is climate crunch time. >> our correspondent has more on this message to leaders. reporter: when the terrorist

took office he wanted to take his time to focus on climate change -- when antonio guterres took office, he wanted to take his time to focus on climate change. but world attention has shifted away. today he tried to bring the attention back by reminding his audience that the consequence of global warming, drought, extreme heat, flood, rising sea levels, food insecurity, these things are not just uncomfortable for people, it puts their lives at risk. he pointed out that wealthy countries are the biggest emitters of greenhouse gas and was particularly critical of the fossil fuel industry, describing them as the godfathers of climate chaos. he said fossil fuels have to be phased out, we have to stop investing in them, they should be taxed, energy companies should be taxed, and advertising

of fossil fuels should be banned. >> we can speak now to the world health organization special envoy for climate change. great to have you back on bbc news. the world has hit another streak of record temperatures. each of the past 12 months were the warmest on record. how significant are these numbers? >> absolutely. thank you for having me on. it is incredibly distressing to hear we are already under this extreme heat alert considering the fact that last year was the hottest year on record and 100 70 years. the problem is this is not only an issue of discomfort. it is an issue for human health and productivity and economic bottom line. a new collection of papers have come out in the journal of global health that highlight the impacts in the way extreme heat affects our health, especially

maternal child health. for pregnant women, each additional degree celsius increase above the temperatures we are facing in the u.s. increases infant mortality by 22%. that is a very significant impact. it increases the risk of cardiovascular events, stroke, mental height crises. and -- mental health crises. in younger people are being impacted as well as older people. >> these are significant points. we have seen deaths in india during the recent heat wave. carbon dioxide emissions hit a record high last year despite global agreements to cut down on fossil fuels. why is there this dissonance? >> i think we are seeing the

dissonance and what is happening with fossil fuels because part of it is we are not making the evidence-based decisions we need. we do not really understand how much our lives are being impacted by what is happening with burning fossil fuels. 5 million people die each year from fossil fuels directly. more than we saw during the covid pandemic in total. but people are not really making the connection that every aspect of our life is impacted by fossil fuel use and continued growing use of fossil fuels. i think if we can invent our way out of this, even if we stopped at all today, we would still be impacted. in the u.s. with extreme heat there is already the loss of $100 billion a year in productivity. we are really talking about an emergency and the need to start to shift not only what we are talking about but who we are

talking to and how we are including everyone to think of about the solutions we need. >> we tend to feel helpless when we see these reports come out. what can people do individually to fight this? >> we all have an individual responsibility to think about our contributions and consumption of fossil fuels and to think about what we can do but we have a collective responsibility to demand a different kind of courageous leadership to make the changes we need to phase out of fossil fuels. we have a narrow window to meet that 1.5 threshold and we are already feeling profound impacts of the 1.2 we are at today. we are racing against the clock and against our own decisions. we need to do things differently.

we can do it in a way that is fair and just and engages the private sector and thinks about how people can still meet mandates and bottom-line but in a way that preserves our health and the health of our planet and the survival. >> thank you. our third story, third time's the charm for boeing. the star liner successfully launched from cape canaveral, florida. >> ignition. and lift off of star liner and atlas five. >> onboard are veteran astronauts flying to the iss. the previous attempts was halted in the final moments. boeing is the second commercial operator to take cruise to the iss after spacex. i spoke with -- this program was

years behind schedule and over budget. how big of a deal is this success? >> it is absolutely historic. it is a historic day and voyage. nasa now has two options to send cargo to the iss and that means there is another option for space tourism and other space agencies who want to carry astronauts to the iss. >> tell us what this mission is about and what the astronauts will be doing. >> they will be going to replace other astronauts, usually astronauts are cycled on the iss, some stay for about a year, most stay for months at a time. it is important that we continue

to send new astronauts to conduct experiments for nasa, for the european space agency and japanese space agency and multiple nations that conduct experiments on the iss. that is the primary responsibility. >> tell us about the landing once calypso comes back to earth because this will be a little different. >> it will. rather than what we are used to with the previous rocket company that lands of the ocean, what we will see is a soft landing in the desert. given that it is not using a reusable rocket, the capsule is coming back itself, it will be interesting to see the deployment mechanism boeing uses, whether it is by parachute, likely some kind of parachute to ensure the landing is soft. >> is it safe to say we are on

the cusp of a new era of space exploration with these types of missions? >> yes. space continues to evolve and inspire more rocket entrepreneurs and space entrepreneurs and what you are seeing here today is not just the result of thousands of engineers over a decade, but also the result of the ingenuity and planning by nasa and the u.s. government, wanting to provide two options years ago to carry humans and cargo to the iss so we will absolutely see more activity in space, given this. >> why do we need to see two options? this is seen as a rival to spacex crew dragon. >> we do not actually see them

as rivals. think about the government perspective, it is always important to have an alternative. whenever there is a decision to look outside the government for commercial provider, usually you have two options so there was always an alternate and one reason is to stimulate the economy. when you provide resources to two companies were doubling the amount of efforts and supporting the space sector writ large. it really helps build the pipeline of engineers, the inspiration we see today is really helping to sow the seeds in the hearts in the next generation of engineers who will do this work so it is important to have more than one option. >> would you be on a star liner

in the future? >> yes. it would be great fun. >> before we go, some scenes from france and the u.k. where commemorations are taken place ahead of the 80th anniversary of d-day. veterans were left in tears as they remember those who lost their lives. more than 4000 soldiers died on d-day, and operation credited with helping to end world war ii. the king and queen joined veterans in portsmouth earlier and president biden landed in france ahead of tomorrow's meeting ceremony. that is our program. remember you can find more on bbc.com/news or of course download our bbc news app. thank you for watching world news announcer: funding for presentation of this program is provided by... financial services firm, raymond james.

cunard is a proud supporter of public television. announcer: funding was also provided by, the freeman foundation. and by judy and peter blum kovler foundation, pursuing solutions for america's neglected needs. ♪ ♪ ♪ ♪ announcer: get the free pbs app now and stream the best of pbs.

good evening. -- geoff: good evening. i'm geoff bennett. amna: and i'm amna nawaz. on the "newshour" tonight, former president trump and president biden close in on their parties nominations despite voter concerns about a 2020 rematch. geoff: the long-delayed boeing starliner finally lifts off from cape canaveral, beginning a new