If I go barefoot in snow my feet soon hurt, yet my dog seems OK. Why?
There are many reasons why canine feet are resistant to the cold, say our readers
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What’s the most efficient way to load passengers into planes? (part 2)
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This week’s new questions
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Why is the left hand used for intricate fingerwork on the violin?
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How and why is hissing so common in the animal kingdom?
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Is it possible to tell sunrise from sunset in an image? (Part 2)
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This week’s new questions
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I fill a tub with water by gravity, but what happens to the gravity?
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People say ‘laughter is the best medicine’, but does it actually help?
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This week’s new questions
Why does it feel like I’m going uphill when I drive north and downhill when I travel south? And why is it so painful for babies to get their first teeth, when children’s new teeth don’t hurt when they come through?
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Why are the gears and chain always on the right‑hand side of bicycles?
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Do birds have faster reaction times than humans?
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Would a tug of war be possible between France and England? (part 2)
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This week’s new questions
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