Personal website of
Daniel T. Johnson

Last updated 2018-Feb-01


This is the 3rd generation of my personal website, driven by changes of Internet Service Providers. I have my own domain name, PERSJOHN, made up of the first four letters of our surnames, Diane Persson and Daniel Johnson.


A picture is worth a thousand words, but digital images often chew up file size and bandwidth so I lean toward text for my website. I like to put links to images so people can easily browse the text and decide whether to look at an image before launching the download.


My 2008 retirement road trip covering almost 80 days and 15,000 miles is here  (or just see the map of my travels), and as I’ve always loved maps here’s my population cartogram of Texas and a map of US population from the 2010 census with a page of details. Diane and I started a blog in 2010,, and went to teach English in China for two years, first at the Baotou Teachers’ College in Inner Mongolia, where the students asked how many countries I'd visited, and to help answer I made a map of all the places I've visited in my life, with color highlight for places I've lived. In 2012 we were at a different place in China, Qinzhou University on the south coast near the border with Vietnam, and returned to Houston in 2013. The summer of 2013 we spent in Canada, with trips on "The Road Less Populated". In 2014 we spent a month in France and hiked the Cotswold Way in England. In 2015 I designed my golden logo to celebrate 50 years in science, and we rented a condo on Vancouver Island for three months in the summer, with a view through the Gap, and went on to buy a condo of our own in Victoria. In 2016 we were there for the whole summer, and in 2017 except a month in Europe. In 2018 we’ll spend the summer in Victoria again.

My Science and Religion material was prepared for presentation at our church, Christ the King Lutheran Church. I first attended the annual conference of IRAS in 1999, and my reflections are here, plus information from a local Science and Religion Discussion Group I organized. Some of my musings include short essays on the Enigma of Time, on Emergence, on The Future of Religion, a review of Douglas Hofstadter’s book I Am a Strange Loop, on intellectual solvent, and my wish for Gigaworld. Since I work a lot with computers, I sometimes think software makes us stupid.  There’s also a page of recommended links to places in our home town of Houston, Texas, where we live in Hammersmith. 

Since we use this as our home page, some of our favorite links include search engines Google, Yahoo, PubMed, maps at Google Maps, social networking on Facebook, dictionary Merriam-Webster, encyclopedia Wikipedia, the New York Times, and Arts & Letters Daily. Books are at Amazon, travel at Travelocity; and radio at NPR. As well, we have a separate page of favorites.