Open problems: questions no one knows the answers to

  • What is dark matter?
  • What is dark energy?
  • What is the interpretation of gravitational solitons? How are they connected to black holes?
  • What is consciousness?
  • Why do we sleep?
  • How does the radiation emitted by a charge affect its dynamics? (this is the problem of radiation-reaction).

Interesting questions we know the answers to

  • Why is the sky blue?
  • Why does salt water fail to satisfy thirst?
  • Why does water stay in a straw when you put your finger on it?

Here is an interesting TED talk by Chris Anderson about questions no one knows the answers to:

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