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83,401 public questions across 1,329 topics. Challenge yourself, or build the perfect quiz for game night.

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Easy The Doppler Effect

Who discovered the Doppler effect?

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Easy The Doppler Effect

What phenomenon causes a siren's pitch to change as it passes?

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Hard The Human Genome Project

Which human genome reference assembly was released in 2013?

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Hard The Human Genome Project

What percentage of the human genome was covered by the finished sequence in 2003?

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Hard The Human Genome Project

How many anonymous donors provided DNA for the Human Genome Project reference genome?

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