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  1. 9 hours ago

    Join me for a live discussion at 3 PM EDT (in a minute or two...) on physics, quantum mechanics, relativity, cosmology...whatever is on your mind.

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  2. May 20

    Art, science, and the cosmic order--a new piece I wrote for the Big Ideas section of .

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  3. May 19

    "The principal source of the harm done by the State is the fact that power is its chief end."--Bertrand Russell

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  4. May 17

    A lighthearted conversation for a Sunday morning exploration of space, time, and mind, with and .

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  5. May 15

    Join me at 3 PM EDT for a live conversation on space, time, quantum, reality--and anything else the comes to mind.

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  6. May 12

    Einstein's greatest discovery is his General Theory of Relativity. Here's a visual explanation with a nod at the end to the math.

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  7. May 11

    "The imagination of nature is far, far greater than the imagination of man."--Richard Feynman, born OTD 1918.

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  8. May 11

    Karl Schwarzschild, who died OTD 1916, beat Einstein to the punch by finding the first exact solution to the equations of General Relativity--a solution that, among much else, revealed the possibility of black holes, now confirmed.

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  9. May 11

    "It doesn't seem to me that this fantastically marvelous universe...can merely be a stage so that God can watch human beings struggle for good and evil."--Richard Feynman, born OTD 1918.

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  10. May 10

    A Sunday morning conversation on entropy and evolution, mind and matter, creativity and impermanence.

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  11. May 9

    "The really frightening thing about totalitarianism is not that it commits 'atrocities' but that it attacks the concept of objective truth."--George Orwell

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  12. May 8

    Join me at 3 PM EDT--in a few minutes that is--for a live conversation on physics, quantum, relativity, entanglement, reality...or whatever else is on your mind.

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  13. May 6

    Join me and tonight for a conversation about my new book, Until the End of Time: Mind, Matter, and Our Search for Meaning in an Evolving Universe. An upbeat exploration of the cosmic perspective.

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  14. May 6

    Every so often simple-looking arithmetic problems get widely circulated, igniting heated arguments seeking the correct answer. Here's my brief rant on the subject, which speaks to the important challenge of exciting kids about math.

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  15. May 4
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  16. May 3

    "The greatest deception men suffer is from their own opinions."--Leonardo da Vinci, died OTD 1519.

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  17. May 2

    "Until the End of Time," takes on both a larger narrative than my previous books--from the big bang to the end of time--as well as a more personal one, with a focus on how we humans use story, myth, religion, creative expression and science to seek out coherence and meaning.

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  18. May 2

    A tweet is too short to address Gödel and physics, but I gave some thoughts on that issue yesterday:

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  19. May 2

    No one knows with certainty if time travel to the past will ever be possible but I'd venture that most physicists imagine that we will one day prove the impossibility of that kind of journey.

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  20. May 2

    The beauty of our evolved brains is that we can simultaneously recognize the fallacy of the intuitive sense of free will and yet behave and think and act and love and grieve as if we have total freedom.

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