Retired #MathTeacher, #Union contract negotiator and treasurer, married, father of a wildlife biologist and an astrophysicist.
I currently prepare #fossils and help maintain the #herpetology collection at my local #NaturalHistoryMuseum, and lead public hikes through the deserts, mountains, and along the coast of #SanDiego, California.
When I was born, atmospheric CO2 was 316 ppm.
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