Monday's postcard, and some new light on the question of where Earth's water came from

March 6, 2023

Surfers in wind-swept waves at Ho’okipa Beach Park on Maui’s north shore

An Illuminating Plunge into the Planetary Water Mystery

When I posted the Geology of Us piece a few weeks back, I knew I’d left a big question hanging. We humans, by mass, are about 70 percent oxygen and hydrogen. That figures, since we’re mostly water, even though some of us are rea…