Concord, Massachusetts is my home, where I am happily married to Andrea Hubbard-Nelson.  Andrea and I have two children, Linnea and Nathaniel.  In the summer we reside in Falmouth on Cape Cod.  Born and raised in Huntington, New York, I attended Cold Spring Harbor High School and then went on to Harvard College, graduating in 1982.  After spending a year in Geneva working at the CERN lab, I moved to California for grad school at UC Berkeley.  I completed a PhD in High Energy Particle Physics and moved on to U.C. Santa Cruz as a postdoctoral fellow in 1989. After 5 years there I left to work in industry, designing electronics and instruments for X-ray Spectroscopy.  I was married to Andrea in Santa Cruz in 1996 and we moved east to New England in 1999.

In 2001, I co-founded Innov-X Systems with Don Sackett, where we developed portable elemental analyzers and other x-ray instruments.  After 10 successful years, I decided to leave and change my focus to the environment and sustainability.  I spent the year 2012-13 in Granada, Spain with my family, working on Spanish and learning about climate science and other subjects.  Since then I’ve been studying and teaching in climate science, sustainability and energy. I am an active member of the Concord Comprehensive Sustainable Energy Committee (CSEC) and ConcordCAN! (the Concord Climate Action Network).