postbus 71
Postbus 71 is here for all your science related questions!
or send it to vraag@postbus71.nl,
ask it on twitter @postbus71
or send it by snailmail to
Postbus 71, 2300AB Leiden
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How can empty space have properties that are measurable?
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Would it not be better if we transition to driving on hydrogen immediately?
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Do quantum computers require a specific algorithm?
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If a dandelion comes from a seed, and that seed from a dandelion, where did the first dandelion come from?
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What happens if lightning strikes in water?
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How can some plants live so much longer than animals?
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Are asteroids as hot as the sun?
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How is metal made?
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In what vessel did people carry water throughout the centuries in Leiden?
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Is chewing gum plastic?
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How does science know that what they know is true?
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What are these dots in my floor?
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Does our body position influence how we feel?
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Why do you change teeth?
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Can tiny underwater insects and invertebrates think?
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Why don't some plants need earth to grow?
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For how long does the earth exist?
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How much CO2, methane, manure, N2 and so on do human farts produce?
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What do they put in food to make it addictive?
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Was there an earth before our earth?
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Can we use the nitrogen produced by farmers as a source of green energy?
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What is in this rock?
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What is the use of the mosquito?
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What did the Neu5Ac mutation do for the evolution of humans?
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How many stars are in the sky?
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Why is the sky blue?
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What colour is most common in the Netherlands?
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Why is it unhealty to eat candy?
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How did the sun come into being?