The main thing I took from this article on geoneutrinos - neutrinos produced by radioactive decay in the mantle - is that it is really hard to measure a flux which is basically “what’s left after we subtract a bunch of neutrinos from other sources.” www.quantamagazine.org/neutrinos-from…

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Given everything else happening on Earth, missing moments of wonder is easy. But damn, some of us—including this kid from Indiana who grew up reading Ray Bradbury & watching Star Trek—lived long enough to see the landscape & hear the wind of another planet. Thanks to all who made that happen.

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My book is still in print, and I recommend it not just for Bay area readers (and their visiting guests), but anyone into the geology of cities.

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The (far, geological) past is a different planet.

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Vote #quartz! I found this doubly terminated Herkimer “Diamond” in NY a few years ago by cracking tons of dolostone searching for vugs coated in small quartz crystals (druzy) that are black from hydrocarbons. This piece opened, but not enough to let the crystal fall. I kept it like this b/c it’s rad

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