Wednesday, 17 June 2026

The Secret World of Twilight by Sally Coulthard

 The Secret World of Twilight cover 

You might not think that there's enough to say about twilight to fill a hardback book, but this book is a real gem that will keep you enthralled all the way through. 

As we fill the world with more and more artificial light, twilight becomes more and more precious.Sally Coulthard shows us why, exploring the scientific, ecological and cultural importance of twilight in language that manages to be both straightforward and lyrical. She shares with us wonderful gems of information such as:

"The hawkbit, a dandelion-like wildflower, closes up shop, more often than not with a pollen beetle snugly tucked inside. Come the morning, the petals reopen and the rested beetle can be on its way."

The main narrative of the book is interspersed with the author's twilight diaries.  

I felt I learned a lot while reading this book, but it never feels overburdened by facts and is consistently readable and beautifully written. 

The Secret World of Twilight by Sally Coulthard, published (March 2026) by Head of Zeus (an imprint of Bloomsbury). 

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One of the aspects of twilight explored in the book is the twilight of the deep sea, which is the topic of a fascinating recent article on the Guardian website, which you can read here.  

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