If you ask a British person how their summer was this year, there’s a good chance they’ll answer, “What summer?” For much of the country, July and August were something of a washout. But then we had that oddly long, hot September heatwave.

Of course, Britain is known for its unpredictable weather but there really was something off this summer – and not just in the UK. Europe’s typical Atlantic weather patterns were repeatedly “blocked” by a disrupted jet stream. And climate change means it’s more likely to happen in the future.

The Ig Nobel prizes were awarded at the end of last week for research that “makes you laugh, and then makes you think”. The literature prize went not to an author but this pair of psychologists, for their work investigating the strange opposite of deja vu.

And it’s been a year since Iran erupted in protest against the killing of a young woman in police custody. We review what’s changed, and what could happen next.

Jack Marley

Environment + Energy Editor

Lighthouse Imaging/Stockimo/Alamy Stock Photo

How weather ‘blocks’ have triggered more extreme heatwaves and floods across Europe

Tim Woollings, University of Oxford

An ‘omega block’ helped Storm Daniel wreak devastation in Libya.

Cornelius Krishna Tedjo/Shutterstock

Jamais vu: the science behind eerie opposite of déjà vu

Akira O'Connor, University of St Andrews; Christopher Moulin, Université Grenoble Alpes (UGA)

Ever looked at a familiar face and found it suddenly unusual or unknown? You may have had a case of jamais vu.

Protests happened all over the world, calling for change in Iran, after Mahsa Amini’s death. Philip Yabut/Alamy

Mahsa Amini: a year into the protest movement in Iran, this is what’s changed

Afshin Shahi, Keele University

People are gearing up for a potential resurgence of protests, while the state is preparing to suppress any sign of dissent.

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