When we breathe, why does the dominant nasal passage swap sides?
Alternating airflow stops each nostril from drying out, explains one reader
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Can a person experience more than 24 hours in a day? Part 3
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Environment
Stunning photographs show the dynamic patterns of the natural world
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Comment
Is this the most niche scientific tourist attraction in the world?
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Environment
Stark photos show quest for profit cutting swathes through the Amazon
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This week鈥檚 new questions
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Why don鈥檛 orcas attack humans? part 3
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Tom Gauld on robot dreams
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Can acquired tastes become unacquired?
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Why do we scrunch up our eyes when we want to see more clearly?
Scrunching up your eyes can help focus your vision, explain our readers
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Twisteddoodles on birds’ beaks and their diets
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Comment
How many academics does it take to tell a joke? Time for a study…
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Twisteddoodles on going up against gravity
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Tom Gauld on the perils of time travel
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