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Does flying put you at risk from radiation?

Getty Images (Credit: Getty Images)Getty Images
(Credit: Getty Images)

Welcome to this week’s SmartList, a collection of snackable facts and snackable statistics about the world we live in – from the radiation risks of flying to the energy your brain uses.

Olivia Howitt/Getty Images (Credit: Getty Images)Olivia Howitt/Getty Images
(Credit: Getty Images)

Source: Journal of Cerebral Blood Flow and Metabolism 

Olivia Howitt/Getty Images (Credit: Getty Images)Olivia Howitt/Getty Images
(Credit: Getty Images)

Source: Radiation Protection Dosimetry; The Untweetable Truth 

Olivia Howitt/iStock (Credit: iStock)Olivia Howitt/iStock
(Credit: iStock)

Source: Business Insider 

Olivia Howitt/Getty Images (Credit: Getty Images)Olivia Howitt/Getty Images
(Credit: Getty Images)

Source: National Geographic

Olivia Howitt/Nigel Hawtin (Credit: Nigel Hawtin)Olivia Howitt/Nigel Hawtin
(Credit: Nigel Hawtin)

Sources:  Nasa and other sources

Read our last SmartList, revelaing six ways to boost your willpower.

What did you learn this week? Share your most mind-expanding facts with us on Twitter with the hashtag #SmartList. They could be included in future posts…