US scientists achieve net energy gain for second time in a fusion reaction

floofloof@lemmy.ca to Technology@lemmy.ml – 305 points –
US scientists achieve net energy gain for second time in a fusion reaction
theguardian.com
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Can anyone explain this pun? I don't get it.

Einstein's most famous equation relates mass and energy: E=mc^2 . So, if you're not matter (mass), you're energy. Which, by the way, is how we make energy in fusion reactions, converting mass to energy.

Ahh so that's what it means. I was trying to think of what sounds like "energy" and could also fit in this sentence.

Fission too. I personally have both mass (more than I want) and energy (Not as much as I would like).