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Quantum entanglement is thought to be one of the trickiest concepts in science, but the core issues are simple. And once understood, entanglement opens up a richer understanding of concepts such as the “many worlds” of quantum theory.

Avogadro's number is sort of like a bridge. It bridges chemistry and atomic physics. In chemistry we measure bulk properties like mass, pressure, volume, temperature. However, when we consider these things from an atomic perspective we look at individual atoms and the momentum, velocity of these particles. Avogadro's number connects these two ideas and allows us to explore atomic-level things by measuring macroscopic level quantities. It’s a big deal.

Emmy Noether's Theorem may be the most important theoretical result in modern physics.

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The race for renewable sources of energy is far from over, and the winners may ultimately be those that mimic nature rather than subverting it. Because one thing is certain: we cannot change physics.

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The Standard Model is a physical theory of a spectacularly successful sort. It is built on beautiful and deep mathematics, covers almost all known physical phenomena, and agrees precisely with the result of every single experiment ever done to test it. It leaves open a very small number of questions: why this specific combination of groups? What determines the parameters of the model? What about gravity? Does it need to be extended to account for dark matter?

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