Glenn Jaecks
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glennjaecks.bsky.social
Glenn Jaecks
@glennjaecks.bsky.social
Geology Professor, Cyclist, Commuter, Beach, 'n' stuff. I think I might be a Le Guinian anarchist, with a tinge of Marx and democratic socialism. I teach climate change.
Trolly system in Dubuque, Iowa, a little more than a century ago. Bring them back!
September 30, 2025 at 1:46 PM
Here is one and a bonus chevron fold shot
September 24, 2025 at 4:26 PM
Field trip to Sequoia and Kings Canyon National Parks
I prefer this to Yosemite. With @thomsec.bsky.social
September 21, 2025 at 5:24 PM
From my bike ride today Fight me bro!
September 5, 2025 at 10:51 PM
#fossilfriday
one from my dissertation (slightly less than 1cm wide for scale)
September 5, 2025 at 3:15 PM
Post your dream ride

opencycle.com/thumbnail/9a...
August 23, 2025 at 2:32 AM
Tree frog with lichen, central Wisconsin, USA
June 30, 2025 at 3:14 PM
badlands? More like totally awesome lands!
June 18, 2025 at 1:39 AM
Wyoming rest areas are woke: they’ve been using passive solar and geothermal heat pumps for decades! #heatpump
June 17, 2025 at 1:43 AM
It’s a day for tacos #TACO
June 14, 2025 at 6:59 PM
Bike trip to the hardware store #cargobike #squidfacts #waroncars #activetransportation
June 11, 2025 at 6:18 PM
happy world bicycle day! I think I'll ride down to the eye center to have them fix my spectacles. #worldbicycleday
June 3, 2025 at 4:10 PM
Wee yardwork surprise today- a sharp tailed snake (I think) #herps #snake #herpetology
June 2, 2025 at 9:26 PM
#fossilfriday even though grades are not done.
May 24, 2025 at 1:43 AM
Looking for patio stones, and found some rain drop impressions.
May 20, 2025 at 6:09 PM
I made a friend on my bike ride today
May 9, 2025 at 11:04 PM
Field trip to the north coast redwoods in the books; lots of big trees, especially along Bull Creek, another great visit to Hog Island Oyster Company, and some views of the coastal melange north of Arcata.
May 4, 2025 at 9:45 PM
Indeed!
May 2, 2025 at 1:17 PM
Heading to Bull Creek for the first stop of our redwoods trip; last years photo
May 1, 2025 at 9:25 PM
Last summer on top of Smarna Gora, Slovenia with my daughter.
April 30, 2025 at 3:46 PM
Lupines, egrets, Dudleya, and a bike glamor shot (last week the beach was hopping, that’s what a 20-30 degree f cooling will do). Good ride today, despite the wind.
April 25, 2025 at 11:56 PM
#invertfest entry: an anemone rock. Low tide at the end of Estero Trail,
Point Reyes
April 24, 2025 at 9:07 PM
“Save the Freaks, Don’t Mine the Deep” shirt worn for #earthday.
April 23, 2025 at 12:31 AM
I guess it’s snake season along the American River. I helped this lovely rattler to safely cross the path yesterday.
April 22, 2025 at 2:17 AM
Today’s ride to Folsom Lake included a bald eagle, more tadpoles in a different pond, some nice trails, and a plover.
April 18, 2025 at 11:37 PM