The bonkers, bristly story of how big toothbrush took over the world

~ Tom Chivers

In a few decades, two warring toothbrush giants have carved out a market worth billions, with the help of a little science and some clever marketing. But where does it go next?

Read more in Wired.

Published by Tom Chivers

I'm a science writer at the i newspaper. Before that, I was a freelance writer and science editor at UnHerd; until January 2018 I was science writer for BuzzFeed UK; before that, I was a comment and features writer for the Telegraph, having joined in 2007. I've written two books, "How to Read Numbers" with my cousin David Chivers, and "The Rationalist's Guide to the Galaxy".

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