Siedis: Energy conservation turns out to be a more slippery concept than you might think. There is a new rule in general relativity that relates what is happening in space time to what is happening with the energy o new rulesdevl Oid. And people have not appreciated, until recently, that that means that energy is not exactly conserved to an observer in quanty mechanics either. Youw you can't just rely on old, faithful, old sayings.
How does physics impact our free will? Neil deGrasse Tyson and comic Negin Farsad discuss quantum mechanics, parallel universes, and the theory of everything with theoretical physicist and author of The Biggest Ideas in the Universe, Sean Carroll.
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