29/05/2026
A neuroscientist's guide to future-proofing your brain and thinking smarter in the 21st Century
In her new book, The 21st Century Brain, scientist Hannah Critchlow explores the overlooked skills that will be necessary to flourish in the age of AI – and how we can cultivate them.
With the world around us evolving at an ever-greater pace, you may fantasise about upgrading your brain to make sense of it all.
At face value, this would seem impossible: our grey-and-white matter has largely the same structure as that of our ancestors living in the Stone Age. If anything, our brains are a bit smaller: archaeological remains suggest they have significantly shrunk in the past 10,000 years.
Hannah Critchlow, a neuroscientist at the University of Cambridge, UK, offers many reasons to be optimistic, however. In her new book The 21st Century Brain she describes how we can all cultivate the mental flexibility that will be necessary to navigate the challenges ahead.
"I basically wrote it for myself, so that I can make better decisions and improve my own life, especially as I go through middle age," she tells me. "But also for my parents, so that they can maintain a healthy brain into older age, and for my son, who's 10 now. What can I do to help his brain to flourish?"
Read on to discover her secrets for future-proofing your mind.