Monica Feria-Tinta is one of a growing number of lawyers using the courts to make governments around the world take action

In November 2024, Monica Feria-Tinta, a veteran of UN tribunals and the international criminal court, strode through a heavy black door into a Georgian building in London’s august legal district for a meeting about a tree in Southend. Affectionately known as Chester, the 150-year-old plane tree towers over a bus shelter in the centre of the Essex seaside town. The council wanted to cut it down and residents were fighting back – but they were running out of options. Katy Treverton, a local campaigner, had travelled from Southend to ask Feria-Tinta’s legal advice. “Chester is one of the last trees left in this part of Southend,” said Treverton, sitting at a large table in an airy meeting room. “Losing him would be losing part of the city’s identity.”

Feria-Tinta nodded, deep-red fingernails clattering on her laptop as she typed. She paused and looked up. “Are we entitled to nature? Is that a human right? I would say yes. It’s not an easy argument, but it’s a valid one.” She recommended going to the council with hard data about the impact of trees on health, and how removing the tree could violate the rights of an economically deprived community. Recent rulings in the European court of human rights, she added, reinforced the notion that the state has obligations on the climate crisis. This set a legal precedent that could help residents defend their single tree in Southend. “It isn’t just a tree,” said Feria-Tinta. “More than that is at stake: a principle.”

In a special episode, Jonathan Freedland and Annie Karni of the New York Times look at what seems to be a long-term question for US politics. With Republicans fighting each other in the House and Senate, and Democrats struggling to command the room, is Congress broken?

Annie’s new book with Luke Broadwater is called Mad House: How Donald Trump, Maga Mean Girls, a Former Used Car Salesman, a Florida Nepo Baby, and a Man With Rats in His Walls Broke Congress

Archive: PBS Newshour, NBC News, WISH-TV, KPRC 2 Click2Houston, Face the Nation, CNN, CBS News, ABC7, ABC News

Harsh weather is normal in Mongolia but the climate crisis has made conditions even more extreme. As millions of animals die and age-old traditions become harder to maintain, nomadic herders are forced into towns, where coal-fired heating has led to a health crisis

• ‘Everyone is breathing this’: how just trying to stay warm is killing thousands a year in the world’s coldest city

His gleefully puerile take on punk brought him fame, an art collection and a Beverly Hills mansion – then the band split and he was diagnosed with lymphoma. How did he bounce back?

Mark Hoppus is prodding at his phone, attempting to find a photograph of the swimming pool at his mid-century modernist home in Beverly Hills. “The house was built in 1962. It has this really cool circular design – the whole house is a semi-circle, built around the pool, and the pool kind of mimics the semi-circle of the house itself, then it goes out into a normal pool shape,” he says. “So it looks like a dick. I have a dick-shaped swimming pool,” he nods.

There is more prodding. For a 53-year-old cancer survivor, he is oddly boyish – and not merely in his enthusiasm for swimming pools that look like genitalia: his skin is unlined; his hair stands up in a vertiginous, spiky quiff; he is wearing a pair of Vans skate shoes. “I’ll look it up on Google Maps so you can see it … let’s go to satellite view. It’s a dick that can be seen from outer space – here, see!” He hands me the phone triumphantly. “There’s the head and there’s the shaft.” He has a point – it does, indeed, look a bit like a crudely rendered penis and testicles.

In Mongolia’s capital, Ulaanbaatar, coal fires heat almost every home. But as extreme weather drives families off the steppes into the city the air is becoming more deadly

• Steppes and the city: how smog has become part of Mongolians’ way of life – in pictures

The eldest child was away training for the army when his family died in their sleep. All six of them, two adults and four children, were poisoned by carbon monoxide gas seeping out from their coal-fired stove into their home in Ulaanbaatar in January, the coldest month in the world’s coldest capital city.

Mongolians were touched by the tragedy but there was anger a month later when, during a two-day parliamentary hearing forced by a public petition against pollution levels, the government released figures showing there had been 779 deaths from carbon monoxide poisoning in the country in the past seven years. By 19 February, when a couple in their 40s were found lifeless in their bed, that number had risen to 811.

Campaigners claim NI is being used as a ‘whipping boy’ to feed Irish republic’s energy-hungry datacentres

An ambitious €350m (£300m) plan to connect electricity grids across the island of Ireland is heading for the high court after a challenge brought by campaigners claiming Northern Ireland was being used as a “whipping boy” to feed the republic’s energy-hungry datacentres.

An estimated 150 landowners representing 6,500 residents have called on the Northern Ireland minister for infrastructure, Liz Kimmins, to suspend the construction of more than 100 towering pylons in Armagh and Tyrone until a judicial review, due to start on 9 April, has been completed.

Contracts show fictional country created by fugitive Indian guru would control vast swathes ‘with full sovereignty’

Followers of a fugitive Indian Hindu guru on a mission to establish his own state are popping up across Latin America, offering hundreds of thousands of dollars to buy land in Ecuador, Paraguay and now Bolivia.

At the end of last year, a representative of the Baure Indigenous people in the Bolivian Amazon signed a “perpetual” contract leasing 60,000 hectares (148,260 acres) of their vast rainforest for $108,000 (£81,910) a year.

Quilt, made in 1980s to raise awareness, to be shown as US cuts raise fears of Aids resurgence in some countries

A giant quilt made to remember people who died of Aids in Britain is to be publicly displayed later this year at Tate Modern’s Turbine Hall in London.

The UK Aids Memorial Quilt was created in the 1980s at the height of the epidemic to raise awareness of the disease and humanise the people who died from it. By the end of 2011, 20,335 people diagnosed with HIV had died in the UK.

Adam Gabbatt reports on the visa and green card-holders being held in US detention centres

“Border Patrol always had the right to grill people trying to enter the US, right,” Guardian US reporter Adam Gabbatt tells Michael Safi . “But from what we can tell now, Border Patrol agents are now much more likely to basically get into people’s business, so to search people’s devices, particularly mobile phones, and there seems to have been a real spike in the number of people being questioned and now detained. We’ve seen that with tourists, but also people on green cards and working visas.”

One of those people was Jasmine Mooney , a Canadian entrepreneur who had travelled to the US on a work visa many times.