The unfolding drama at Twitter following its takeover by Elon Musk continues unabated. The latest twist is that the social media platform’s Brussels office has been disbanded. Similar moves were made in India and France where local executives left abruptly in the wake of widespread job cuts instituted by the new owner and CEO. Concerns are growing about the platform’s ability to ensure compliance with local laws designed to police online content, potentially opening the company up to lawsuits and regulatory action.

The changes also point to a very different experience for users, who are now decamping and heading to alternatives like Mastodon. If you’re wanting to quit, here’s a useful guide from Daniel Angus and Timothy Graham on how to go about it safely.

It’s 80 years old, but, in my view, still worth watching. And not just once. Casablanca, filmed in black and white and released in November 1942, stars the iconic pair Humphrey Bogart and Ingrid Bergman alongside a host of recognisable supporting players, including Dooley Wilson at the piano singing, among other songs, 'As Time Goes By'. It’s the stuff of goosebumps, even after the umpteenth viewing. You might even, inadvertently, use some of the phrases it made famous such as: ‘Here’s looking at you kid.’ And ‘This is the beginning of a beautiful friendship.’

I tear up everytime I watch the La Marseillaise being sung with verve and passion at Rick’s Café in full defiance of the Nazi officers belting out a German anthem. Ben McCann captures the film’s essence in this lovely review.

Caroline Southey

Founding Editor

Thinking of breaking up with Twitter? Here’s the right way to do it

Daniel Angus, Queensland University of Technology; Timothy Graham, Queensland University of Technology

With the World Cup under way (bringing in more traffic) and more than 1,000 employees having reportedly resigned, concerns for the platform’s future are warranted.

Watching Casablanca on its 80th anniversary, we remain in awe of its simplicity – and profound depth

Ben McCann, University of Adelaide

80 years after its release, we return to Casablanca and remember its potent mix of romance, thrills and cynicism

Why are shallow earthquakes more destructive? The disaster in Java is a devastating example

Phil R. Cummins, Australian National University; Mudrik Rahmawan Daryono, Badan Riset dan Inovasi Nasional (BRIN); Stacey Servito Martin, Australian National University

The Java quake was so devastating in part because it occurred so close to the surface.

The era of the megalopolis: how the world’s cities are merging

James Cheshire, UCL; Michael Batty, UCL

Quite how to gauge the size of a city – or where one ends and the next begins – is getting harder to determine. The 21st century belongs to the limitless city.