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.
I live on Kumeyaay land.