I'm collecting unmanswered and unanswerable questions, paradoxes and problems from philosophy and science and would welcome any contributions. The sort of thing I mean is Zeno's paradoxes, Russell's paradox, the problem of attributes, the problem of consciousness, the wave-particle duality, non-locality, time, abiogenesis, why there is anything rather than nothing, the 'cause' of the Big Bang, God, the nature of time, whether 'right and wrong' exists, etc etc. All additions to the list welcome. (I'm not looking to argue about them, just to put a good list together). Thanks in advance for any contributions.