This week鈥檚 new questions
Why do we say 鈥渁ww鈥� when we see small fluffy things? And which bicycle lights are safest and give best visibility: pulsating, fixed-beam ones, or some other method such as helmet or backpack lights?
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Do winged animals ever suffer comparable mishaps to aircraft?
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How long will it be until the pyramids in Egypt weather away?
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What makes galaxies spin in a certain direction? Part two
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This week鈥檚 new questions
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Is there a limit to how small an adult arthropod can be? If so, why?
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Would whisking cold water up from the ocean depths help with warming?
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Are gnats attracted to eyeballs, or do we just notice these ones most?
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This week鈥檚 new questions
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Why don鈥檛 marine mammals like whales get 鈥榯he bends鈥�?
Unlike humans, marine mammals don鈥檛 breathe compressed gases when they dive, say our readers 鈥� but it is possible for them to get decompression sickness
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When was it realised that moonlight is reflected sunlight? Part 2
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How do dogs recognise that another animal is also a dog? Part 3
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This week鈥檚 new questions
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Why do fallen trees grow stems vertically from a horizontal trunk?
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