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From 7th Ave. to the Pacific was once windswept open dunes; find out how and why it was transformed on a Golden Gate Park Outside Lands tour.

Recent Thinkwalks articles…Show all

Atmospheric River Meditation in SF

December 13th, 2014

Here’s my 7-minute storm video, meditative and exploratory rather than my usual strict documentation.

San Francisco was blasted by a few inches of rain in a single day on Thursday, Dec. 11, 2014. It was an ‘atmospheric river’ (AR) like a fire hose of water vapor flowing about a mile up in the air off the sea from the equatorial region beyond Hawai’i.

First it blasted Canada and then Washington, then Oregon, then us (in essEFF), then Southern California.

I’ve been researching the probable AR storm sequence of 1861 & 1862, as readers [...]

Atwater’s Geology Talk—Lecture Notes

October 25th, 2014

Living in the Plate Boundary and Through the Ice Ages

Geologist and plate tectonics animator Tanya Atwater presented a talk with the title above to our Natural History Series talks at the Randall Museum October 16, 2014.

The presentation was largely based on diagrammatic animation videos which these notes cannot describe. But you can see them yourself on Atwater’s website (or you can Google ‘Atwater animations’). I wasn’t as able to take notes as thoroughly as usual since my eyes were up on the video screen a lot.

The surface of the earth is [...]

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