What is a Neutrino…And Why Do They Matter?

Brief summary of neutrinos. There’s a strange quote at the end, though, which bothers me more than the “give off puffs of energy” tucked into the explanation.

“If 100 years ago, I told someone that the universe was filled with massless, chargeless particles with no energy, I wonder if they’d have believed you,” Conway said

I’m not believing you now. The article just got done saying that neutrinos aren’t massless, and how do they have no energy? I wonder of the quote was mangled or is out of context.
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