Vegan leathers are complicated by questions of commercial viability and sustainability. How do they compare to traditional leather?

• Change by degrees offers life hacks and sustainable living tips each Saturday to help reduce your household’s carbon footprint

• Got a question or tip for reducing household emissions? Email us at changebydegrees@theguardian.com

In sustainable fashion, breathless promises about vegan leather have arrived thick and fast for over a decade. Innovations promise mushroom and cactus alternatives that look and feel like real leather – minus the negative associations with methane, deforestation, chemical pollution and animal welfare.

While these next-gen materials have absorbed billions of dollars in capital under an environmental banner, experts are concerned they remain a shiny distraction while the fashion industry’s emissions and reliance on fossil fuel-derived materials grows.

The 25th anniversary of 9/11, Russian strikes in Kyiv, wildfires in Indonesia and Sabalenka at the US Open – the past seven days as captured by the world’s leading photojournalists

Warning: this gallery contains images some readers may find distressing

Keeping people in charge means little if supercomputers determine the evidence, choices and time on which their decisions depend

If there were a 10% chance that AI could wipe out humanity, no responsible government would leave its development to companies racing to build it. Yet until recently, that seemed to be the case. The warning was all the more ominous because it was made by a researcher at Anthropic, the trillion-dollar AI company behind the Claude chatbot. The dangers of AI-enabled pandemics or attacks on nuclear systems are real. Countries need not agree on democracy or trade policy to accept this.

The US and China will hold, reportedly, their first bilateral AI-safety talks before a planned White House summit between Donald Trump and Xi Jinping. Despite their tech rivalry, neither Washington nor Beijing can make the most advanced AI safe on their own. A US-China settlement won’t be able to say how AI works everywhere. Countries deploying AI must help write the global rulebook. The odds on an extinction event are shortening. This week Anthropic said that it identified five cases in which attempts were made using its models to support biological weapons development. It banned the accounts. In one case, a platform sent requests rejected by Claude to a rival with weaker safeguards. AI safety, clearly, cannot be that of the least responsible model.

Do you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here.

Audacious robberies are a staple of popular culture. But for museums, crimes like this week’s theft of two Renoirs are an existential threat

Marc Allégret’s 1956 comedy Plucking the Daisy stars a young Brigitte Bardot as a first-time author who breaks into the Balzac house museum in Paris under the mistaken impression that her brother lives there. The plot revolves around her unwitting theft of an extremely rare book – and performance of a striptease in a desperate effort to raise the cash to buy it back.

Seventy years on, the lax security that could make such a sequence of events even vaguely plausible is no longer a joke. Museums across the world are scrambling to react to a spate of thefts that has left them in a state of shock. Last year’s break-in at the Louvre, by a gang who gained access using a furniture lift and took €88m (£76m) worth of French crown jewels, is thought by experts to have inspired copycat crimes. While French police believe that they have caught the culprits, treasures including a tiara have not been found.

Do you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here.

⛳️ Solheim Cup updates from 6.40am BST at Bernardus Golf
⛳️ Live scores | And send any thoughts to David via via email

Europe do indeed escape from their travails on 1 with a half. Alison Lee leaves her birdie putt short, and Nanna Koertz Madsen tidies up. But the USA strike back on 2, Nelly Korda wedging close with her approach on the par five, and Lottie Woad can’t save the day with her 15-foot right-to-left putt. All square in the opening two matches.

Corpuz/Korda A/S Hull/Woad (2)
Koerstz Madsen/Boutier A/S Coughlin/Al. Lee (1)

Updates from Friday’s play at Edgbaston, 11am BST start
Ashes legal dispute led to lack of 2027 Test in the north
A day at the Knight-Stokes Cup | The Spin | Email Jim

State-school cricket has had its day at Lord’s, at last. On a ground that has this summer hosted men’s and women’s international Tests, the Women’s T20 World Cup final and the Hundred finals, on Thursday four school teams played in front of the Pavilion and Father Time for the Knight-Stokes Cup, named after two state-educated cricketers who have captained England’s Test teams.

Heather Knight and Ben Stokes recorded video messages for pupils from Altrincham grammar school, John Hampden grammar school, Penistone grammar school and Chelmsford County high school before they competed in the boys’ and girls’ finals. The privileges did not stop there – full use of the Pavilion dressing rooms, lunch and media duties made this a day to remember and inspire.

Substitution with jack mackerel, a different species, because of dwindling stocks is criticised by the consumer group Which?

If you’ve recently opened a tin of mackerel and thought there was something fishy going on, you may have been right. An overfishing crisis means that instead of traditional mackerel, some now contain a different fish with a similar name, prompting concerns that shoppers are being short-changed.

Over the past year big brands such as Princes, as well as some supermarket own-labels, have replaced traditional tinned mackerel fillets with jack mackerel fillets.

The Guardian is looking for single men of all ages to talk honestly about the experience of being unattached

The Guardian is looking for single men of all ages to talk honestly about the experience of being unattached. Whether you are 16 or 100, we want to hear the unvarnished truth about what it’s like to live as a single man today.

Are you trying to find love? Or are you happy living life as a bachelor? Do you find the experience of modern dating – with all its red flags and height requirements – to be a minefield? Or are you attracting more attention than ever before?

Rampant Yemeni fighters take control of island in narrow point of Bab al-Mandab strait, which Saudi is relying on for oil exports

• Violence in Yemen: why it matters and how it is linked to the US-Iran war

Yemen’s rampant Houthi forces have captured the strategic island of Perim in the Bab al-Mandab strait, expanding their control of the narrow waterway, one of the ​world’s vital shipping routes.

The Iran-aligned Houthis took control of the volcanic island after forces allied to the UN-backed, Aden-based government left in the latest of a dramatic series of reverses along Yemen’s west coast in recent days, including the loss of the port city of Mocha on Thursday.

⚽️ News and updates before the weekend’s football action
⚽️ Premier League: 10 things to watch out for | Mail John

Matthias Jaissle revealed that summer signing Matias Fernandez-Pardo is edging closer to starting for Newcastle.

The 21-year-old forward arrived on Tyneside from Lille on deadline day and has featured as a substitute in Newcastle’s last two matches. Speaking ahead of Monday’s clash with Leeds, Jaissle said: “Yeah, he’s getting closer. I said that we need to be smart with his load management. Now he’s getting more and more minutes.

The Houthis have wrested control of Yemen’s Red Sea coast from Saudi-backed government, giving Iran and its allies control over a key shipping lane

Violence has erupted again in Yemen, where a rapid advance by the Houthis in recent days is threatening another waterway critical to global shipping.

More than 1,000 people have been killed or wounded, and tens of thousands displaced by the most significant fighting between the Iran-aligned Houthis and the Saudi-backed Yemeni government forces in years.

Far-right German party’s newly elected representatives face fresh scrutiny as it tries to form government in Saxony-Anhalt

• Why is the AfD’s state victory significant and what might happen next?

The Alternative für Deutschland is facing scrutiny over the suitability of some of its prospective new MPs – including a former Stasi officer and a former pornography actor – just days after its historic win in the German state of Saxony-Anhalt.

Presented by the AfD’s lead candidate, Ulrich Siegmund, for a photocall in the state capital of Magdeburg on Thursday, some of the members-elect were revealed to have a range of questionable backgrounds, including criminal records, Stasi pasts and connections to far-right networks.

Toronto film festival: the chilling true story of a woman who tried to hide from her wartime crimes gets turned into a strangely inert misfire

The first scene of the 60s-set drama The Housewife is a closeup of a whistling kettle, an early “wink, wink” sign that we’re watching a story where tensions are set to boil but also that we’re watching a film of minimal subtlety.

Perhaps if it had been pitched closer to its adjacently named cousin The Housemaid, as a silly, sensationalist thriller, such heavy-handed decision-making would feel more well-suited. But instead, while some scenes flirt with the idea of something juicier, this is a stuffy and stodgy slab of self-serious, old-school Oscar bait complete with all the shouting, crying, throwing and finger-pointing one would expect. Think overcooked rather than slow simmer.

The Housewife is premiering at the Toronto film festival and is seeking distribution

MotelX – Portugal’s only film festival dedicated to horror – hopes to inspire local film-makers by showcasing world-class scares. Now in its 20th edition, its directors say truly nerve-shredding cinema is its holy grail

If horror happens in the dark, the midnight movie showing was once the perfect way of gauging the genre’s health. But those days may be over. “When we were a film club, our first ever cinema screening was Takashi Miike’s Ichi the Killer in 2003, and it was full,” says Pedro Souto, co-director of Lisbon’s horror-centric MotelX festival. “But you don’t have that many people at midnight any more. I don’t know why.” He’s right: the midnight slot I attend – of the gore-bathed Indonesian kung fu flick Ikatan Darah – is only half full. Only a few appreciative chuckles when meat-cleavers plunge into craniums suggest the old midnight spirit still lives.

No need to panic, though: horror has simply embraced the light. With the genre exploding in the 2010s and 2020s, and blockbusting grosses this year for the likes of Obsession and Backrooms, MotelX is able to gorge itself on this cultural jugular. Now in its 20th edition, the festival has expanded to 11 days, with more than 170 films from 40 countries. Flashy branding – a howling gimp and the signature X, both in inflatable PVC – is dotted on around city billboards. At the opening ceremony, a gigantic birthday cake – the self-same gimp emerging from a lake of gelatine “blood” – is massacred by the punters within 20 minutes. Crowds seem abundant at most screenings, dominated by a heatwave look (dark singlets, shorts and sweaty tattoos) best described as “goth Decathlon”.

New hybrid street circuit has fast corners, virtually no margin for error – but limited overtaking opportunities

In Madrid’s Puerta del Sol this week, Formula One fans were not shy in calling on the gods to look kindly on their favoured drivers on a newly built circuit that appears punishingly unforgiving.

Legend has it that rubbing the paws or backside of the bear in the famous El Oso y el Madroño statue at the square’s heart confers good luck. The drivers may well need it. Day one of action at the brand new Madring track began with F2’s Tasanapol Inthraphuvasak careening into the barriers and his car catching fire, leaving the onlooking George Russell shocked before the F1 drivers took to the wheel.

Rachel Szor and Yuval Abraham collected the testimony of 24 insiders who helped remotely target Gazans’ homes. They explain how they got these self-professed ‘small cogs’ to talk about the killing

On a darkened rooftop in Tel Aviv, Israeli intelligence officers outline the details of their work. These men tell us how they helped develop an AI mapping tool that trawled for phone signals and recommended apartment buildings in Gaza to bomb. Indirectly, they admit, they are responsible for thousands of deaths, but they never spoke up because that wasn’t their place. “My role is technical,” says one. “I’m just a small cog,” says another.

NAZA – directed by the Israeli film-makers Rachel Szor and Yuval Abraham and produced by the Guardian – is a chilling documentary about a mass slaughter that was authorised at the highest levels of government. But it is also, primarily, about the process, the system, the little links in the killing chain. Szor and Abraham build their film around the accounts of 24 anonymised military and intelligence insiders. NAZA, we learn, is an acronym used by the intelligence service to indicate how many civilians it expects to die in an airstrike on Gaza. The Israel Defense Forces prefer to target Hamas terrorists in their homes at night – and if they live with their family, or in heavily populated neighbourhoods, too bad. At one point, a source claims, approval was given to kill 500 NAZA for one Hamas member.

Phra Wachirayan Wi arrested alongside woman he was filmed having sex with in latest scandal to hit country’s clergy

Police in Thailand have arrested a senior Buddhist monk on suspicion of embezzling $2.8m intended for his monastery, alongside a suspected female accomplice he was filmed having sex with.

The case is the latest scandal to hit the clergy in the Buddhist-majority country, after a sex and extortion case involving senior monks last year prompted public outrage and calls for greater scrutiny of temple finances.

What started as a school project about plucky fictional kids in animal masks sparked an obsessive fanbase and a major label deal. Now the artist behind it all – known as Yaelokre – is ready to reveal themself

Harpy Hare by Yaelokre is the kind of song you might expect to have gone viral in the 1520s, not the 2020s. Backed by guitalele (that’s a guitar/ukulele hybrid), the lullaby begins with the line “Harpy Hare, where have you buried all your children?” performed by fictional kids from the equally fictional world of Meadowlark who are depicted in fey illustrations wearing animal masks. But two years ago it became an unlikely TikTok hit, reaching No 1 on Spotify’s Global Viral Songs chart.

That was in summer 2024, when the world of Meadowlark was a bit more DIY. Not only was its creator still making tracks and illustrations from their “diary turned storybook” in their bedroom, there was no Reddit community around them yet and only the faintest of whispers about Yaelokre online. These days, Keath Ósk, the Icelandic-Filipino artist behind the project, has almost three million monthly Spotify listeners; last year they played a sell-out UK and Ireland tour, and they have just released their first album under their own name, delighting a following of gen Z and queer listeners who write fan fiction about Ósk’s world and cosplay as their hand-drawn characters, prompting questions on Reddit such as: “My costume has bells [on it], should I remove them for the concert?”

We would like to speak to people about how their early years coloured their relationship with cash

We would like to speak to people about how their childhoods shaped their attitude towards money in later life.

Do you think the way you manage money has been affected by your upbringing? Did your family talk about money openly, or was it a subject that felt taboo? And how has that shaped your attitude to your personal finances today?