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Around 200 million people use cannabis recreationally and it is being legalised in more and more countries. But while many users welcome the exhilaration, reflection and relaxation it can temporarily bring, research suggests prolonged use may negatively alter how we think and feel – even when we’re not taking it.
Even mild cannabis use can harm our ability to focus and plan, while heavy use and addiction is linked to problems with memory and executive functions such as flexible thinking. In some people, it can also lead to problems with motivation, while for others it is a risk factor for developing psychotic experiences.
Meanwhile, the Apple TV+ show Severance imagines what would happen to our sense of self if we could completely separate our work and home lives. Philosophy suggests it’s a bad idea even trying. And in Russia, many people are longing for the days of the USSR. Here’s why.
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Miriam Frankel
Science Editor
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Agave Photo Studio.
Agave Photo Studio/Shutterstock
Barbara Jacquelyn Sahakian, University of Cambridge; Christelle Langley, University of Cambridge; Martine Skumlien, University of Cambridge; Tianye Jia, Fudan University
Cannabis use is linked to poorer memory, attention and mental health.
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Photobank.kiev.ua / Shutterstock
Peter West, Durham University
Apple TV’s Severance imagines what would happen to our sense of self if we could completely separate our work and home lives.
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EPA/Alexei Drushinin/Sputnik/Kremlin pool
Stephen Whitefield, University of Oxford; Paul Chaisty, University of Oxford
Many Russians hanker for the old USSR, but it has more to do with cultural and economic nostalgia than wanting the old Soviet empire back.
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Ukraine Invasion
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Dale Pankhurst, Queen's University Belfast
A lot of the fighting in Ukraine is being done by non-state militias, some with a chequered history.
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Environment
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Tim Jackson, University of Surrey
The new energy security strategy still doesn’t take energy efficiency seriously.
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Joe Wills, University of Leicester
Slow progress may be better than none at all for animals living in the UK.
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Science + Technology
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Joyjit Chatterjee, University of Hull; Nina Dethlefs, University of Hull
While the developed world is making rapid technological progress, the developing world is underrepresented in the AI revolution.
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Anne Carter, Nottingham Trent University; Jacqueline Boyd, Nottingham Trent University
Pet obesity is a growing problem – and even a little extra body weight on a dog or cat can lead to health problems.
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Arts + Culture
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Gill Jamieson, University of the West of Scotland
The film based on Walter Lord’s 1955 account is much more accurate than James Cameron’s epic.
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Featured events
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— Contact Theatre, Oxford Road, Manchester, Manchester, M139PL, United Kingdom of Great Britain and Northern Ireland — University of Manchester
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— The University of Manchester, Oxford Road, Manchester, Manchester, M139PL, United Kingdom of Great Britain and Northern Ireland — University of Manchester
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— The Whitworth, Oxford Road, Manchester, Manchester, M139PL, United Kingdom of Great Britain and Northern Ireland — University of Manchester
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— The University of Manchester, Oxford Road, Manchester, Manchester, M139PL, United Kingdom of Great Britain and Northern Ireland — University of Manchester
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