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BoxingThe contrasting fortunes of the flamboyant promoter and his fellow boxing dealmaker, Bob Arum, were on full display over the weekend Larry Merchant, the venerable sportswriter and TV commentator recently observed, at the age of 92, that “it’s easy getting into your 80s but hard to get out of them.” That wisdom applies to two men who dominated boxing for a half-century and shaped the business as we know it today.

PC Simon Harwood and Ian Tomlinson: key video footage GuardianIan Tomlinson This article is more than 10 years oldTimelineThis article is more than 10 years oldKey events surrounding and following the death of the newspaper seller during the G20 protests in London in 2009 1 April A man dies during the G20 protests in central London. A police statement released three hours afterwards reads: “The officers took the decision to move him as during this time a number of missiles – believed to be bottles – were being thrown at them.

Fan mussels in the Ebro delta, where scientists are working to save the fast-dwindling species from extinction. Photograph: Courtesy of Insitituto de Investigación y Tecnología AgroalimentariaFan mussels in the Ebro delta, where scientists are working to save the fast-dwindling species from extinction. Photograph: Courtesy of Insitituto de Investigación y Tecnología AgroalimentariaThe age of extinctionEnvironmentPinna nobilis is vital to the Mediterranean ecosystem, but since 2016 numbers have plummeted by 99.9% – and saving it from extinction is no easy task

Blooming marvellous … Adrian Chiles and the skyscraping century plant. Photograph: Courtesy of Adrian ChilesBlooming marvellous … Adrian Chiles and the skyscraping century plant. Photograph: Courtesy of Adrian ChilesOpinionPlants This article is more than 2 years oldMy towering agave plant is in full bloom – but it’s a bittersweet bonanzaThis article is more than 2 years oldAdrian ChilesThe century plant outside my flat grew a monstrous stalk this summer. I have since learned this means its days are numbered – which has painted it in a whole new light

Pop and rockObituaryRay Sawyer obituarySinger and percussionist with Dr Hook, the American band that had 1970s hits with Sylvia’s Mother and The Cover of Rolling Stone Ray Sawyer’s eye-patch, bristling moustache and battered, badge-festooned hat made him the unmistakable visual signature of Dr Hook & the Medicine Show. Although Sawyer, who has died aged 81, mostly played percussion and sang backup vocals, his voice came to the fore on one of the group’s hits, The Cover of Rolling Stone, which reached No 6 on the US chart in March 1973.

America's dirty divideUS newsGuardian analysis of data in light of Ohio train derailment shows accidental releases are happening consistently Mike DeWine, the Ohio governor, recently lamented the toll taken on the residents of East Palestine after the toxic train derailment there, saying “no other community should have to go through this”. But such accidents are happening with striking regularity. A Guardian analysis of data collected by the Environmental Protection Agency (EPA) and by non-profit groups that track chemical accidents in the US shows that accidental releases – be they through train derailments, truck crashes, pipeline ruptures or industrial plant leaks and spills – are happening consistently across the country.

Internet This article is more than 1 year oldRisky online behaviour ‘almost normalised’ among young people, says studyThis article is more than 1 year oldEU-funded survey of people aged 16-19 finds one in four have trolled someone – while UK least ‘cyberdeviant’ of nine countries Risky and criminal online behaviour is in danger of becoming normalised among a generation of young people across Europe, according to EU-funded research that found one in four 16- to 19-year-olds have trolled someone online and one in three have engaged in digital piracy.

Ask Leo & LucyEthical and green livingWhat's the greenest tree for a garden?Planting more trees is vital, but finding the most ecologically appropriate one entails some rooting around, says Lucy SiegleAmong those of us inclined to hug them, the status of trees is irrefutable. They are just so environmentally talented. A large one produces enough oxygen for the daily requirements of 10 people or enough paper for 270 paperbacks; they reduce the type of smog formation that causes asthma, and provide shade and habitat for flora and fauna.

Where to start withHaruki MurakamiThe acclaimed Japanese author’s deceptively simple writing combines fantasy and reality in stories of everything from missing cats to dystopian histories via fantasy thrillers and meditations on love. Then he told us about running Japan’s bestselling living novelist Haruki Murakami started writing aged 30 and became a literary sensation in 1987 when his fifth novel Norwegian Wood was published. His mixture of realistic and dreamlike narratives has earned him a dedicated fanbase, and his name is often floated as a contender for the Nobel prize in literature.