This week’s new questions
1 February 2023
What is the most efficient way to stir to dissolve something in water? And is it possible to distinguish sunrise from sunset from a snapshot?
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Premium
What is the most efficient way to load passengers into an aircraft?
8 February 2023
All sorts of methods have been devised to speed up aircraft boarding, but semi-random chaos still might be the fastest way say our readers - who also suggest some unconventional alternatives.
What is the point in having nerve endings in our teeth?
22 February 2023
The benefits of having nerves in our teeth far outweigh the painful downsides, say our readers
Why do loose screws only get looser, not the other way round? (part 2)
22 February 2023
Our readers provide yet more evidence that screws don’t always get looser
This week’s new questions
15 February 2023
How was rhubarb discovered to be edible when it isn’t palatable raw? Why do flames go out when blown?
How much of my body from 40 years ago is part of me today? (part 2)
15 February 2023
While much of your body gets recycled, one reader points out why this isn't true for the brain
Why is this snail carrying an extra shell on its back?
11 January 2023
One reader found a snail in their garden carrying a second shell on top of its original, and another reader speculates about how this occurred
This week’s new questions
4 January 2023
Why do we have nerve endings in our teeth when they seem to serve no useful purpose? And when doing strenuous exercise, why does it seem to help to call out the number of repetitions?
How could I theoretically reach other dimensions in the multiverse?
25 January 2023
Even if they exist, there is no conceivable way to get to other multiverses, say some readers. Others advocate mind-altering drugs, wardrobes and even a tumble dryer to access other dimensions
This week’s new questions
18 January 2023
How can one vibrating eardrum convey the rich symphony that we hear? And is it possible to yawn without closing your eyes?