Four years ago nearly every government on Earth agreed to protect nature. Now, as countries gather for Cop17, the pressure is on to follow through on those commitments

• Cop17 at a glance: everything you need to know about the UN’s nature summit

Passersby could smell the dead fish before they saw them. In August, more than 3,000 pike, roach, carp and rudd were found lifeless along the River Wensum in Norwich. Some gasped for air in their final moments, desperate for the oxygen that heatwave conditions had depleted in the water. Investigators believe that the die-off was triggered by heavy rainfall that flushed through high concentrations of pollution at a time when wildlife were already struggling.

The 45-mile (70km) chalk river is one of about 250 in the country. They are a geological accident almost unique to Britain – and one of Earth’s rarest habitats. They emerge from chalk aquifers and are home to species such as freshwater shrimp, otters and stoneflies, also providing drinking water for millions of people. But just 11 have formal protection, with many ravaged by sewage pollution and overextraction. The Norfolk river is one of the few that does have legal protection, but it is in poor ecological health.

Twenty years ago, if a pregnant woman had asked for a C-section because of her fears over poor staffing levels, midwives would have thought she was over-anxious. Now, it seems like a depressingly realist position

The classic way to outrage someone who’s pregnant is to touch their stomach without asking. I would never do that and it never, back in the day, happened to me – but I always thought, as outrageous as it might hypothetically be, that it also stood as a vivid analogy for the generalised social intrusiveness you get while you’re visibly pregnant. Endless questions about how you’re feeling, when you’re due, what hospital you’re going to, whether it’s a boy or a girl, how much time you have off. I hated this interrogation 20 years ago, but now I do it on a reflex; some driving force of human fellowship makes me want to know. I realised mid-sentence, asking a stranger about hospitals – and replying “That’s a great hospital, my sister had her kids in there” – that it must be even more grating than it was in the 00s. My nieces are 19 and 21 now, and that great hospital, unless it’s magically unconnected to the rest of the NHS, has probably changed quite a lot.

The NHS Alliance has announced that up to 20 of the country’s 155 smaller, consultant-led maternity units, mostly in rural or coastal areas, might have to close, since their safety is in question. The problem – which will seem very pressing and obvious to anyone about to give birth, yet quite abstract and manageable to anyone who isn’t – is that those areas aren’t teeming with alternatives. There are women in Devon whose maternity hospital has been temporarily closed, whose next nearest hospital is 53 miles away. Do they even encourage people to write a birthing plan any more? Because nobody’s, surely, would start: “First, I’d like to spend 90 minutes in a car, yelling at my birthing partner.”

From rent strikes to squatting, a new show reveals how people have managed to keep a roof over their head in London – and the mould and astronomical rents that persist

Charles Booth’s pioneering poverty maps of Victorian London show a vivid colour-coded warren of streets, alleyways and slums tightly packed together. Those marked black and dark blue were classed as being “very poor”, defined by “chronic want”. The light blue ones were poor – “18s to 21s a week for a moderate family”. Pink streets housed those who were “fairly comfortable”, and those where the wealthy lived were marked in yellow.

The maps by the British social reformer are the 19th-century equivalent of the modern-day indices of deprivation, which rank every geographic area of the UK by its level of social and economic disadvantage. Comparing the two shows how much has changed in the past 150 years – but also what hasn’t. Historical slums have been cleared away and housing conditions have generally improved, but extreme poverty and extreme wealth continue to live side by side in the capital.

I’d become obsessed with appealing to my invisible audience. But since I ditched the app a year ago, my quieter moments have taken on brilliant new meaning

I first downloaded Instagram when I was 17 and became hooked on it the way most people fall in love: slowly, and then all at once. For a long time, I never considered myself a social media addict. I self-righteously refused to download TikTok, declared Snapchat to be for “children”, and posted less regularly on Instagram than half of the people I followed.

As I went through my university years, however, certain changes crept up on me. I began to swap reading – or essay-writing – for hours spent curating new posts. On my way home from lectures (or later, from my work as a journalist), I would spend ages trying to take the artsiest, most perfect picture of that evening’s sunset for my story – as if the people who followed me were eagerly awaiting yet another photo of one of the Earth’s rotations. What usually followed was a night of reloading my feed to see how many people had reacted to my post – or worse, hadn’t reacted at all.

Florian Wirtz takes on more responsibility in Liverpool’s attack while Pierre Sage is under pressure at Crystal Palace

Dominic Calvert-Lewin’s physicality overpowering Bryan Mbeumo in Manchester United’s area at a corner grabbed him a fifth goal in 10 outings for Leeds: a pretty respectable ratio. “I just tried to cause a ruckus,” said Leeds’ No 9. “I make it difficult for the defender. I read the flight of the ball and was quickest to react. I feel really comfortable [here]. I feel the support from the club and the fans and it is a great feeling stepping on to the pitch, particularly at Elland Road.” Of the contenders to be understudy to Harry Kane as England’s centre-forward, Calvert-Lewin may be the lead act – if he can stay injury-free, which has been a difficulty throughout his career. Jamie Jackson

Match report: Leeds 1-1 Manchester United

Match report: Brentford 1-2 Liverpool

Match report: Manchester City 3-2 Ipswich

American journalist Evan Gershkovich talks about his arrest by the Russian intelligence services in 2023, his 16-month detention, and the swap deal that eventually took him home. Get in touch at tif.questions@theguardian.com

Evan Gershkovich was in an American-style steakhouse – with fake deer heads on the walls – talking to a contact in an eastern Russian city when masked agents of the Russian intelligence service burst in. ‘It was a trap from the start,’ he says. The American journalist who was working for the Wall Street Journal was detained, beaten and charged with espionage.

Evan talks to Annie Kelly about his arrest, what happened during his detention in a high-security jail, and the swap deal that finally took him home.

Interior minister concedes police ‘lost control’, with forces in cities including Paris and Lyon overwhelmed after ‘lack of anticipation’

• Europe live – latest updates

France’s prime minister has said he has asked regional authorities to impose partial curfews in some cities after the government admitted police had “lost control” in several places during violent weekend protests around the country.

Sébastien Lecornu said after an emergency cabinet meeting on Monday he was “fully resolved to restore public order” and had called for “local and partial” curfews if needed. There was “no question” of imposing a full curfew on entire cities such as Paris, he added.

Downing Street delivered a rare rebuke to a senior member of Donald Trump’s administration

Asked why the Lib Dems were opposed to a third runway at Heathrow when they professed to be in favour of growth, Cooper said she did not accept that a third runway would produce all the benefits its supporters claimed.

She explained:

On Heathrow, it is clear from looking at all of the economic analysis of airport growth over the last few years that many of the promises made by all sorts of different airport companies simply haven’t come to bear.

The promise of higher wage jobs hasn’t been substantiated. Often it’s lower paid jobs, and often not as many as they’ve claimed.

Ukrainian president accuses Washington of ‘denial of reality’ in ongoing row with Trump over apparent support for Moscow

Ukraine did not receive a warning from the US about an impending Russian missile attack on Sunday evening, Volodymyr Zelenskyy has said, reviving concerns that Washington is withholding intelligence in order to bully Kyiv into capitulating to Moscow.

Yuri Ihnat, a spokesperson for the Ukrainian Air Force, said on television on Monday morning that Ukraine had not received a warning before a Russian missile barrage hit power plants in Kyiv at around 11pm. Earlier, a Ukrainian government official had told the Guardian the US had not warned the capital about the impending missile strike.

Comedian, who is on trial at Southwark crown court, allegedly sexually assaulted woman within minute of meeting her

Russell Brand had a “weird maniacal” grin on his face like a clown when he grabbed a woman’s breasts before dragging her into a toilet and raping her, a court has heard.

The 51-year-old comedian is accused of orally raping the MTV worker as he told her: “You want to do this,” and: “Come on, don’t be a spoilsport.”