tesla's sales improve in the second quarter, sending its stock soaring 10%. with the olympics nearly upon us, we take a look at how technology is transforming the games. hello and welcome to business today. i'm steve lai. we begin with tesla. the ev maker's shares have surged 10% after the firm reported better—than—expected vehicle delivery numbers in the second quarter. the bbc�*s north america business correspondent michelle fleury has all the details. after going through a slump, tesla may have finally turned a corner thanks to demand for its model three sedan and its model y suv. the company delivered nearly 444,000 cars in the last three months, a figure that is up sharply from the previous quarter, although it's still down nearly 5% from a year ago. as a result of this

better than expected performance, tesla retains the title as the world's top seller of electric cars. meanwhile, there was also good news out of general motors. the detroit auto—maker said electric car sales hit a new record, but those double digit gains still account for only a small percentage of its overall business. nonetheless, the upbeat news is being seen as a positive sign at a time when us car—makers face increased competition from the likes of chinese firm byd, as well as lukewarm consumer demand for electric vehicles. the clock is ticking for chinese and the european union negotiators who are in talks over the eu's plans to impose tariffs on chinese electric vehicles. the provisional tariffs are expected to kick in on 4july. last month, the eu announced it would impose duties as much as 38% on evs shipped from china. that's on top of the 10% levy on all cars imported to eu countries.

these proposed tariffs vary depending on how much each car—maker cooperated with eu investigators looking into chinese government subsidies for the ev industry. among china's biggest car—makers, the tariffs are highest for saic, which makes the m64 electric car. geely, which owns a stake in volvo, faces a tariff of 20% while a 17.4% duty will be applied to byd brands. to discuss what's at stake for the chinese ev sector, tu le from sino auto insights explained what is at stake for chinese car—makers if no solution is reached. mainly, they're just trying to find a way for the chinese government to reduce or eliminate the tariffs and with the eu they are just trying to do everything they can to stand firm. there is internal pressures from the german auto—makers to reduce or eliminate the tariffs as well, so last week they actually reduced the geely tariffs by a little bit, but it's more

insult to injury. it seems like the eu is going to do everything they can to stand firm with these severe increases on the tariffs. china says it wants a mutually acceptable solution but what can that realistically look like? i think what's important is, you know, beforejuly 4 if there is any movement, it might be minimal on either side, both sides, specifically looking at the saic close to 50% on the tariffs. they need to be able to sell something to the domestic audience that they are being strong and or they are negotiating some sort of reduction to save face on both sides. but the eu seems very serious, i would also look at these tariffs as the eu really acknowledging that the chinese

evs that are being built and currently are about 25% of all euv�*s imported into the eu are made in china. it's acknowledgement that these products are really good and the domestic competition probably isn't up to the task competing with them. in other news, the us—based short seller hindenburg research, which had accused india's adani group of market manipulation and accounting fraud last year, is back in the news. the investor is fielding accusations of collusion in the adani case by the indian market regulator. business correspondent nikhil inamdar has the latest on the saga. hindenburg research says allegations from the indian market regulator sebi that it colluded with a us asset manager to use non—public information to set up its short bet against the adani group last year, are completely false. short trades are set up to bet against a company's share price

and hindenburg's allegations caused adani's market gap to plunge by over $100 billion last year. in a statement on its website hindenburg called sebi's notice accusing it of regulatory violations nonsense and said it was an attempt to silence and intimidate them. the statement further says the regulator was doing more to protect those who were perpetrating fraud than the investors who were in fact being victimised. neither the adani group nor market regulator has so far responded to these comments. google has revealed its greenhouse gas emissions have soared in the last five years because of the electricity needed to power data centres developing artificial intelligence. according to the latest environmental report by the firm its carbon footprint increased by 48% despite the tech giant pledging to become carbon neutral by the end of the decade. its rival microsoft which has a big stake in 0penai's chatgpt saw emissions rise by 30% last year.

speaking of artificial intelligence, generative ai is getting smarter at some university exams. a recent study by the university of reading has found that on tests for psychology courses, answers generated by ai scored higher than those done by undergraduate students. the study also found that 94% of the ai answers were undetected by those marking the exams. to understand the implications this has for the education one of the study�*s co—authors professor peter scarfe laid out the implications of this. we have to embrace the new tool. ai is really not going to be going anywhere, our study has showed it is an issue for academic integrity. i think going forward we'll be looking at a new kind of assessments where we have a set of assessments which are completed in a supervised fashion, so we know that al can't be used

and on a set of assessments where we are using and embracing ai in an assessment itself. it seems almost like counterintuitive to be tested on how well you can use al to further your education, but i suppose that's the world we are in now and the way things are going. do you think if we project this forward though, what do you think the implications will be on education and also for people when they enter the workforce? yeah, you're completely right, ourstudents will be using ai in the workplace after university and so it's going to be our kind of role to help them use ai ethically and reliably, but while ai is a problem for academic integrity it also offers a really big potential benefit for helping to augment and shape education. if calculators will have helped us with our with the olympic games in paris just weeks away,

new technology is increasingly important both in sporting arenas and for the audiences watching coverage of the events. lara lewington from the bbc�*s click programme caught up with olympic gymnastics champion max whitlock to look at technology aiming to enhance viewing experiences at the games. max whitlock is britain's greatest gymnast. he's won multiple titles including three world championship golds and six 0lympic medals. three of those were also gold. but this will be his last time competing at the games. he is retiring after paris, so fans may want to watch his every move. the olympics of course provides great excitement all over the world but despite the fact that athletes move fast, they can't be everywhere all at once. so maybe this is a solution. 29 cameras make up this volumetric studio which will have more than one use for athletes. all those cameras are then fed into

a capture pc that runs on intel processing power. we can capture human performances, interactions, singing, dancing, whatever, in full 4—d. the result is a 360—degree video that we can use to insert in other 360—degree virtual environments. the end result is a digital version of the person which can be beamed into tv studios around the world during broadcast interviews. i am max whitlock, a team gb gymnast and six—time olympic medallist, and i'm going to do a somersault in this new technology. using a tracked camera we can synchronise the virtual - environment and the athlete doing a backflip _ with the interviewer in real time so it. seems like they are actually together. l any athlete would call out and massively welcome new technologies that are gonna enhance

the viewing experience, seeing sport in different ways. i think it's obviously very, very clever when there are new ways to move forward to do sport in different ways. it's amazing. and here we have it, the smartphone version of an ar athlete which sports fans can access byjust scanning a qr code. what was the turning point when it felt like it was fit for purpose? it took a lot of r&d to get a human looking like a human. you can't mess up the way a human looks, right? 0ur human perception, it is very astute, so if someone�*s eyes are off a bit, we recognise that immediately and so in the reconstruction process in 3—d we had to get it perfect. turn into click to see lauren leverington. goodbye for now.

hello and welcome to sportsday — i'm gavin ramjaun. the long wait is over for the netherlands who make the quarter finals of the euros after beating romania. and they'll meet turkey in the last eight after their thrilling victory over austria, including the quickest knockout—stage goal in history. and djokovic in cruise control — putting knee concerns to one side on his opening match at wimbledon. but a shock for the defending women's champion at swi9. hello there and welcome along to the programme. and we start with the european championship. we now know the quarterfinal line—ups for the tournament

in germany, after victories for the netherlands