While the New York mayor-elect is constantly smiling in the face of his detractors, having a perma-grin didn’t come so easily to me

As a big fan of citizen science, I have spent the past month conducting a very important experiment. While I am not quite as hardcore as the American virologist Jonas Salk, who injected the polio vaccine into himself and his family before large-scale trials, this scientific inquiry has involved some personal pain. You see, I have spent the last month trying to smile like Zohran Mamdani. This is not, as I have discovered, an easy feat.

Ever since the incoming mayor of New York became a household name, I’ve been intrigued by his perma-smile. His detractors call him a “jihadist”, and he smiles. He meets Donald Trump, and he smiles. Some Republican lawmakers launch a campaign to investigate his path to citizenship and deport him? He keeps on smiling. I’m not sure I’ve ever seen him look angry.

The lines between advertising, public relations and journalism have become dangerously blurred

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Enough time has passed now, I think, that I can safely tell you about one of the stupidest things I have ever done. Almost a decade ago I decided to quit my well-paid job in advertising in order to pursue a precarious career in freelance journalism. The merits of that decision are up for debate but the real stupidity is in how I quit my job: I wrote a rather cringeworthy column for the Guardian about my “meaningless job in advertising” and publicly proclaimed that I’d decided to quit. My boss saw the piece and, well, he obviously wasn’t happy. (Sorry, Sean!)

I bring this embarrassing anecdote up because I’ve been doing a lot of reflecting recently on the reasons why I left advertising. Maybe this sounds twee, but I was sick of selling people things they didn’t need. I wanted to do something meaningful.

The OpenAI CEO gushed about the bot’s parental-assistance abilities. Is it really his best child-rearing hack?

Just how does he do it all? Every time I look at the news, Sam Altman’s face seems to be staring back at me. The CEO of OpenAI, a well-known workaholic, is constantly in the public eye explaining how AI will probably cure cancer and transform the social contract and generally change the world. While doing all that he’s reportedly gearing up for OpenAI to file for a stock market listing valuing the company at $1tn, as soon as next year. And he’s also a new dad: Altman and his husband, Oliver Mulherin, welcomed their first child into the world in February. So he’s got a lot on his plate.

Arwa Mahdawi is a Guardian columnist

Transport infrastructure in the US is a hot mess – and the guy in charge thinks ‘wellness spaces’ are going to solve the problem

Sean “Dog” Duffy is a legend in the lumberjack world: a three-time world champion in the 90ft lumberjack speed climb who is renowned for his prowess in mounting and rolling big bits of wood. Not just a lumberjack, Duffy also made waves on late-90s reality TV shows The Real World: Boston and Road Rules: All Stars. And now Duffy is parlaying his experience on Road Rules into his role as US transportation secretary.

Duffy has got a lot on his big lumberjack hands: transport infrastructure in the US is, to use the technical term, a hot mess. More than a third of the country’s bridges need major repair work or replacement. There has been little historical investment in railways and the country lags behind the rest of the industrialized world when it comes to high-speed trains. Meanwhile, there’s a chronic air-traffic-controller shortage, which was exacerbated by the recent government shutdown when a number of controllers, fed up with the dysfunctional system, took early retirement.

The song contest continues with its mission of ‘unity and cultural exchange’ by rolling out the red carpet for Israel, even though at least four countries have pulled out in protest

A new acronym emerged a couple of months into Israel’s bombardment of Gaza: WCNSF. “Wounded child, no surviving family”. That acronym is unique to Gaza, experts like paediatrician Dr Tanya Haj-Hasan with Médecins Sans Frontières have said. Normally it’s rare for doctors to treat a child who has lost their entire family. But there has been nothing “normal” about the genocide in Gaza, where whole bloodlines have been wiped out and there are more child amputees than anywhere else in the world. Nothing normal about scores of doctors coming back from a landscape of rubble with reports of kids being deliberately targeted by Israeli snipers.

Despite a supposed ceasefire being in place, Gaza remains hell on earth. Essential medical supplies are not getting in and Amnesty International has said Israel is still committing genocide. (Israel has denied this, of course, just as it denies everything it is accused of.) But while traumatised orphans are now freezing in makeshift tent camps, there is a little heartwarming news: nothing is going to stop the Eurovision song contest from continuing with its mission of “unity and cultural exchange.” Eurovision will continue to roll out a blood-red carpet for Israel, even though at least four European countries (Netherlands, Spain, Ireland, Slovenia) have now pulled out in protest. Because this is what unity looks like, folks!

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The inaugural award bestowed upon the US president could pave the way for many more colourful accolades. I have some ideas ...

What a privilege it is to be alive in such a peaceful and prosperous time. If you ignore the genocides in Sudan and Gaza, fighting in eastern Congo, continued attacks on Ukraine, military airstrikes in Myanmar, near-daily strikes on Lebanon, “extrajudicial killings” on Venezualan vessels, increased political violence in the US, along with various other inconvenient issues, then I think we can all agree that Donald Trump has ushered in world peace.

Good luck convincing the nasty Norwegians on the Nobel committee of that, though. They’ve doled out peace prizes to many an alleged war criminal but have a weird grudge against Trump. Still, at least Fifa, an organisation renowned for its impeccable ethics, appreciates the president’s efforts. Last Friday, Trump was awarded the inaugural Fifa peace prize in an over-the-top ceremony that would have made a lesser man, one burdened with a smidgen of self-awareness, feel like a prize idiot.

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The reporter’s alleged affair with Robert F Kennedy Jr raises a whole host of questions, few of which get answers in this pretentious memoir

Did he take me seriously?” Olivia Nuzzi wonders in the midst of her infamous alleged affair with Robert F Kennedy Jr. Nuzzi, then Washington correspondent for New York magazine, has just learned that she and the Politician, as she calls RFK Jr in her new book, may overlap during a visit to Mar-a-Lago. Nuzzi, worried Donald Trump will catch on and start spreading rumours, convenes an emergency meeting with the Politician to strategise. RFK Jr – who has denied having an affair with Nuzzi – doesn’t see the big deal.

So, she agonises “Did he take me seriously?” and reflects that she had “little cause to consider the question before now.”