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16 May 2022


On April 25th, it was announced that Elon Musk had arranged to buy the social media company Twitter. He had just attained majority shareholder status a few weeks earlier. I’ve been an avid Twitter user for twelve years, accruing 11.5K followers over that interval, and very much enjoying the conversation — but I decided to leave the service when the sale was announced. Musk has articulated both an interest in …


27 December 2017

Ten years of Mountain Beltway

Callan has been blogging about geology for a decade. Here are a few reflections on those ten years behind the wheel of “Mountain Beltway.”


29 December 2016

Year in review

We approach the end of another calendar year, and with it comes my ninth anniversary of beginning to write about geology online. (A year from now will mark a decade of geoblogging for me!) It’s been a rough year, health-wise for my friends and family. Loved ones have suffered strokes, brain cancer, Alzheimer’s, and other horrible ailments. I myself have been battling a persistent respiratory infection for most of the …


17 November 2015

Hitting a nerve with popular posts

I blog here a few times a week, when I can manage it. Mostly I focus on new things I discover on field trips, advances in geologic imagery, and structural geology.  I get about 500 readers per day. But occasionally I write about other things, like creationism or current events disasters like earthquakes, and those posts garner a lot more attention. They get shared and reshared and spread out. My …