The Conversation

One of my biggest regrets is abandoning French and Spanish after GCSE. What felt like a chore at twelve is now a small daily thrill on Duolingo, where every streak and new verb feels like a tiny victory. And it turns out that multilingualism may offer more than better holidays and smug bragging rights.

New research suggests it could help keep the brain younger for longer. Scientists looked at more than 86,000 adults across Europe and found that people in multilingual countries were less likely to show signs of accelerated ageing. Even better, the effect was strongest in people in their 70s and 80s.

Ancient historians have long seen the adoption of farming as key to the emergence of the first states. But new research suggests agriculture was just as likely to be the result of state formation as its cause. Instead, one particular rural innovation may have actually paved the way for more hierarchical societies.

Plus, why the world’s most dangerous eruptions may come not from famous peaks like Etna, but from the “quiet” volcanoes we barely monitor at all.

Katie Edwards

Commissioning Editor, Health + Medicine

Rawpixel.com/Shutterstock

How multilingualism can protect against brain ageing

Xinyu Liu, University of Reading; Christos Pliatsikas, University of Reading

A study of 86,000 older adults across Europe shows people who speak multiple languages tend to age more slowly than monolinguals.

Shutterstock/RawPixel

The real reason states first emerged thousands of years ago – new research

Christopher Opie, University of Bristol; Quentin Douglas Atkinson, University of Auckland, Waipapa Taumata Rau

New findings add weight to the theory that states didn’t just spring up from any kind of farming – it had to be grain.

El Chichón volcano in Mexico erupted explosively in 1982 after lying dormant for centuries. Michael Cassidy

The world’s little-known volcanoes pose the greatest threat

Mike Cassidy, University of Birmingham

In regions like the Pacific, South America and Indonesia, an eruption from a volcano with no recorded history occurs every seven to ten years.

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