We discovered a new rock type containing garnet inside a meteorite fragment from Mars

Holy crap. That's awesome.

Sweet coltsfoot is one of the first flowers after the snow melts in Nopaming, Manitoba

Cenote Dos Ojos located north of Tulum, Mexico

Spring?

We are hiring a structural geologist at #BrockU in Ontario, Canada. Reach out if you are interested! brocku.wd3.myworkdayjobs.com/en-US/brocku...

Instead of an LPSC abstract, a few of us posted our concerns about the censorship of the conference at blog.planetary-research.org/2026/01/06/a..., with some suggestions for other conferences you can attend to discuss planetary science. (Definitely shorter than 2 pages 10 pt font, too!)

I made a marbled loaf!

By far most common costume is a Blue Jays player. Also, I expect everyone will be done trick or treating by 8. Happy Halloween and Go Jays!

Excellent piece from the Planetary Society highlighting some of the human stories of NASA's workforce losses: www.planetary.org/articles/400...

Thankful for fall harvest and sunshine enjoyed with family! #canadianthanksgiving

A true honor to perform “American Tune” with #PaulSimon and the incredibly talented students at Juilliard. As I said in the article, I remember first looking at the lyrics of “American Tune” and going “Oh, my God — did you write this yesterday?”

www.nature.com/articles/s41... great to see this paper out about potential biosignatures in one of Perseverance’s samples! and it’s making quite a splash! What an amazing discovery and I am lucky to have played a small part.

John Brown’s body lies amouldering in his grave. His truth is marching on! A lesson on abolitionists and truth-tellers and good trouble.

Post your last photo of DC to show what a hell-hole it is.

Just finished rereading a favourite book, To Say Nothing of the Dog. And the cat! A fun escape #booksky #penwiper

Indigo milk cap beauty

Look at those little blue green minerals! They tell us a lot about the environment where they formed. On Mars! www.nature.com/articles/s41...

Look at those little blue green minerals! They tell us a lot about the environment where they formed. On Mars! www.nature.com/articles/s41...

Stingray feeding #stingray #zoo #fortwayne

So, if you enjoy volcanoes and my writing about them, you have options: the Eruptions Newsletter (eruptions.beehiiv.com), the 5 Minute Volcano podcast (5mv.buzzsprout.com) or just follow along here on Bluesky. Who knew you needed all this volcano?

Pride mineral display 🌈

www.sciencedirect.com/science/arti... New article by @geochemystery.bsky.social! What might evidence of life on Mars look like? These tuffs in Idaho with putative biosignatures might hold the answer.

Sometimes you find a trilobite

Red trillium, Ontario

Hey there, Jack-in-the-pulpit! These flowers are such fun to photograph and peek inside.

Interviewing a tenure-track candidate as Department Chair today. Wish us both luck!

Oh hello, Lilly!

Upper Balls Falls

eos.org/editor-highl... I wrote a highlight for a cool study

Heard but not seen today: owl, turkey, woodpecker, red-winged blackbird, frogs

Donald Trump’s policies are more than dumb — they’re stupid, according to stupidity researchers

Europe is advertising itself as a destination for embattled US scientists https://go.nature.com/4cdKKcx

www.washingtonpost.com/history/2025... Because this is antithetical to its mission, I hope that when it is all over, the Smithsonian will create an exhibit about how this example of authoritarianism is bad for museums and us all.

An argument for the Anthropocene.

Oh hello there. Welcome back #crocus

New Eruptions newsletter out today! I discuss unrest at Spurr that may be leading to an eruption, exciting views of lava fountains at Fuego in Guatemala & why "Virginia Reel Around the Fountain" (Halo Benders version) is great. Like what you see? Subscribe! eruptions.beehiiv.com/p/eruptions-...

Saying goodbye to our island escape. Mental health reset.

Handful of beach

Thank you! ❤️

My son had a Ukrainian refugee in his daycare last year. He understood she was here because Russia was dropping bombs on her house. He loved her and got why she sometimes had a tough time. It is heartbreaking how empathy so obvious to children is so lacking in US government right now.

Civil servants include some of the hardest working, most intellectually curious people I know. They chose this career path because they care about the future of our planet and its people.

Which dystopian science fiction does the Trump v2 era remind you of?

Some good press featuring research that was years in the making. A collaboration between researchers in Canada, US, Denmark, UK, and Australia. brocku.ca/brock-news/2...

Tariffs will hurt everyone and serve no purpose. Canada and Mexico didn’t vote for this.

www.science.org/doi/10.1126/... Excited to see our paper on Maaz PIXL results is out in Science Advances!

The #PalisadesFire & #EatonFire have had a devastating impact on people throughout the LA region, including many of the scientists who work at NASA’s JPL. Eos’s @astrokimcartier.bsky.social spoke with JPL director Laurie Leshin about how the lab is recovering. eos.org/articles/jet...

🔭 These new #Gaia maps are the best reconstructed views of how our #MilkyWay galaxy might look to an outside observer. They show us our place in the Universe like no other mission has before👇

Beyond teaching the science of global planetary change, geoscience educators should also be communicating how different communities are disproportionately affected by such change, writes Gary Gomby of Central Connecticut State University.