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Columnist

Tackling topics from the cutting edge of dark matter research to the latest developments in the tech world, explore the incisive opinions of 91av's expert columnists.

Space

The hidden pockets of the universe where the future can cause the past

Inside some very special black holes, there may be a boundary called a Cauchy horizon. Columnist Leah Crane explores the place beyond which physics breaks and anything is possible

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Mind

Where do you think your ‘self’ is? Your answer is revealing

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Physics

Why do particle physicists like spending time in fields?

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Mathematics

The mathematician who doesn’t exist

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Space

The problem of cosmic inflation and how to solve it

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Health

Honey has been used as medicine for centuries – does it really work?

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Physics

An unorthodox version of quantum theory could reveal what reality is

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Health

We may finally have a cure for many different autoimmune conditions

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Mind

How your heart rate variability can offer an insight into your mind

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Health

Is stem cell therapy about to transform medicine and reverse ageing?

A clinical trial to reverse age-related vision conditions using stem cell treatment could finally deliver on the promise of a major discovery in ageing and regeneration made 20 years ago, says columnist Graham Lawton

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Mind

Why is it so hard to change your mind?

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Space

The rise, the fall and the rebound of cyclic cosmology

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Humans

Are Neanderthals descendants of modern humans?

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Physics

The stunning physics of Project Hail Mary go back to ancient China

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