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Research on things few others have dug into can be found in Thinkwalks articles.

Sep
23
Tue
2014
Storms Like You’ve Never Seen—Yet
Sep 23 @ 7:00 pm – 9:00 pm

Thinkwalks & Sacramento County Historical Society present:

A history talk in Sacramento

Storms Like You’ve Never Seen—Yet

Joel Pomerantz of Thinkwalks will present his research on the giant storm sequence that blasted the entire western United States in 1862.

Nature is an almost infinitely complex system. Once it’s broken it’s not possible to get it back to where it was. We might be able to fix it, but only in the sense that we may find a way for our troubled species to survive beyond this century. If survival, or even avoiding raucous chaos is our goal, we’d do well to observe closely all the larger systems we’re part of, especially the history of extreme life-threatening events.

The storms of 1862 don’t especially rank in geologic terms, but they could be at the top of the disaster list in historic times. We have thousands of accounts from eye witnesses who saw towns washed away, stranded people plucked from treetops by steamships cruising well beyond the riverbanks in the Central Valley. We know that the state government was in disarray, fighting about whether to escape to San Francisco (they did move for a time). We know that mine tailings and silt were stripped from Gold Country ravines and deposited into San Francisco Bay.

And we know that the Sacramento flood control systems failed.

Come learn and discuss what reports, songs, newspapers and other sources from 150 years ago can tell us about a storm that will eventually come again, possibly bigger.

⭐ No need to RSVP—Just show up!

Oct
2
Thu
2014
Park History Deep in Manure
Oct 2 @ 4:00 pm – 6:30 pm

Thinkwalks presents an exploration bike ride:

Park History Deep in Manure

The Park was built with rich waste from 19th Century street sweepings on what was considered a poor wasteland of shifting sand dunes.

We’ll ride our bikes around to explore and find the oddities… A railroad right-of-way in the Park? A 900-year-old building? A quarry-turned-pond-turned-pregnancy-test-eradication-zone? A living fossil third species of redwood (coast redwood and giant sequoia being the first two)? Yes, amazingly, all of the above.

We’ll also see historic photos at the sites of… A mini Brooklyn Bridge? The ship that found the Northwest Passage? A virtually unknown plan for a superhighway from 1928? Yes, true!

Ride without rush, appreciating how the dunes became today’s lush garden. We’ll unearth how the Park was made, and make it more ours.

⭐ Rain or shine

RSVP required

Sliding Scale

At the end of your Thinkwalk if you can’t afford the standard price please feel free to pay a lower amount, on a sliding scale going from the standard price down to no lower than $10.

Click “READ MORE” for RSVP, meeting location and full info.

Oct
16
Thu
2014
Living in the Plate Boundary
Oct 16 @ 7:30 pm – 9:00 pm

Thinkwalks and SF Natural History Series present:

A talk at the Randall Museum

Living in the Plate Boundary

Superstar Geophysicist Tanya Atwater, will present an incredible and amazing series of images and ideas on the geologically active San Francisco area. She’ll also throw in some climate-related stuff because it’s amazing.

Tanya is a retired faculty member from UC Santa Barbara. After the initial theories of plate tectonics were established, Tanya was deeply involved in completing the theories. Her early papers on the topic were incorporated directly into text books and set the standard for geology education. She also is well known for using animations as an educational tool. More animations.

Check back here for further details closer to the event date.

⭐ No need to RSVP—Just show up!

Nov
20
Thu
2014
Sky Phenomema
Nov 20 @ 7:30 pm – 9:00 pm

Thinkwalks and SF Natural History Series present:

A talk at the Randall Museum

Sky Phenomena

Joe Jordan will come back with new material after having really wowed and inspired us with his slides on this topic in 1997.

Joe is the kind of excitable guy who, when he sees the conditions are just right for unusual cloud formations at the North Pole, hops on a specially instrumented plane commandeered from NASA just so he can go photograph and study them. (Well, he did, back when he was working at NASA Ames.)

Joe has recently focused his attention on energy planning and will regale us with some details of that project as an added treat.

Check back here for further details closer to the event date.

⭐ No need to RSVP—Just show up!

Jan
15
Thu
2015
Ice Plants, Mattress Wireweed & Other Onslaughts
Jan 15 @ 7:30 pm – 9:00 pm

Thinkwalks and SF Natural History Series present:

A talk at the Randall Museum

Ice Plants, Mattress Wireweed & Other Onslaughts

Lew Stringer of the Presidio Trust and formerly with the Golden Gate National recreation Area (GGNRA) will give us a presentation about the creepy plants that seem to be creeping all over the place. Invasives aren’t 100% evil. They’re 100% complex and give a real challenge to restoration efforts in the parks.

Check back here for further details closer to the event date.

⭐ No need to RSVP—Just show up!

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