Rebecca Williams

@volcanologist.bsky.social

Professor of Volcanology. Waffle about volcanoes, HigherEd, tea and occasional running. SFHEA & STEM ambassador. She/her.

Going for the cute rocks. Here's a dinky wee boudinaged bit of dike in some deformed marble. All cut off from his boudin buddies who've been stretched far away. All alone, but hugged by the equally stressed Durness Limestone. Both survivors of the Tertiary Beinn an Dubhaic granite intrusion aureole.

Photo of a finger pointing at a tiny sausage shaped green-black rock. On either side is a grey rock that has a foliation to it, wrapping around the wee sausage rock..

Check out this wee chappie. A tiny but perfectly formed chrinoid star. Found in the Lower Jurassic at Boggle Hole, locally these are known as St Cuthbert's Beads. Up the coast in Northumberland, in Medieval Times, chrinoid stem fossils were strung together to make rosaries.

photo of a black rock. I'm one corner is a tiny star shaped fossil. There's is a penny for scale

Here we have a rock with a social history story. A stalactite formed in the inside of a canal tunnel. The white layers formed before steam powered boats, when the canal boats were pulled by horses. From the late 1800s the boats were powered by coal and the sooty smoke coloured the layers black.

A photograph of a rock cute in half. You can see that the rock is made up of layers. The bottom half of the rock is cream. Towards there layers get progressively more grey then black. There is an explanation sign in front of the rock with the title "stalactite'.

I just searched 'rock' in my photo album on my phone and will post what comes up. First up, meet this little cutie Rhomb Porphyry cobble used as part of a 20th Century repair to the Roman Walls around York. Almost certainly from Norway, brought here as glacial till.

A photo of some cobbles cemented into a wall. The cobble in the centre is a dark purple colour with pinky-cream rhomb shaped crystals.

Feeling a bit melancholy today. Tell me about your favorite rock. Can be your favorite rock type, rock formation, or even a very specific hunk of rock. I will also accept minerals. Photos welcome.

I'm so grateful for the rain. It's desperately needed. I'll dance for joy in this rain. But I am gutted that the only two days holiday I have with the kids this summer is the only two days of rain we'll get all year*

The Data Centre Land Grab: How Britain Is Being Carved Up for Big Tech — Without Your Consent Across Wales, Scotland, and England, the largest peacetime infrastructure seizure of community land and energy in modern British history is accelerating. open.substack.com/pub/european...

The Data Centre Land Grab: How Britain Is Being Carved Up for Big Tech — Without Your Consent

Across Wales, Scotland, and England, the largest peacetime infrastructure seizure of community land and energy in modern British history is accelerating.

open.substack.com

Only just found out about this For the record, you don't get multiple genetic markers and one of the most effective medications known to science with 'social constructs' Channel 4, this is, in scientific parlance, an absolute fu*king disgrace that will genuinely endanger lives #c4 #ADHD

New Channel 4 documentary, The Great ADHD Myth?, seeks to determine whether ADHD is a genuine neurodevelopmental disorder, or a social construct

I work at a public library. People who want to use AI seem to have no trouble doing so. People who don't want to use AI have a harder time. I crowdsourced and then finalized this document "How to disable or avoid intrusive AI" and then gave it a short URL: notoai.org Please pass along if it's useful

An aircraft passenger oxygen mask: a drop down passenger mask with air bag and yellow plastic mouth and nose cover, oxygen tube has been cut; Demonstration model used by flight attendant crew for passenger instruction. Has text on the side indicating that it's non-functional.

Microsoft wants to build three massive AI data centres in Leeds. It’ll drain thousands of litres of water from the River Aire and become the city's biggest carbon emitter. We can still stop the council's final sign-off, but we need more voices. Add your name: you.38degrees.org.uk/petitions/pr...

Stop the Microsoft AI megasite in Leeds!

Microsoft want to build three huge AI data centres at Skelton Grange. It would drain the River Aire and become the city's biggest carbon emitter. We can still stop it - add your name to the petition.

you.38degrees.org.uk

Do you know an extraordinary scientist or researcher who has been courageous in standing up for science? There's still a few days to make your nominations for the John Maddox Prize, which recognises individuals who stand up for science and evidence. Find out more below:

Sense about Science@senseaboutsci.bsky.social · last wk.

🚨 Only 1 week to go! 🚨 Make sure to submit your nominations soon for the 2026 John Maddox Prize, as the entry portal closes at midnight on Sunday 2 August. The 2026 John Maddox Prize is supported by the @royalsociety.org Finalise your entry now! 👇️ johnmaddoxprize.awardstage.com

The BBC treats climate change as a political subject, which it is not. This gives them the excuse of "both sidesing" an overwhelming scientific consensus and outright lying. It is a propaganda machine downplaying a deadly emergency and questions need to be asked at the highest level as to why.

Michael E. Mann@michaelemann.bsky.social · 6d ago

I was not informed by the BBC that they would have a right wing political figure or lobbyist on after me to rebut what I said. The individual in question went on to spout lies about China, etc. to distract attention from the Trump administration's assault on climate action. This is unacceptable.

Can't be the first to say this, but (and yay UEFA - brilliant) this works equally well if you swap out "football" for maybe "water" or "a stable climate". Look at me being the revolutionary socialist. "No one has the moral authority to sell what they merely hold in trust for the next generation."

The moment external investors acquire ownership interests in
FIFA competitions, football changes forever. Commercial return becomes a permanent obligation. Investor expectations become a daily pressure. From that moment onwards, every decision on the international calendar, every decision on competition formats and every decision shaping the future of football is no longer driven by what best serves the game, but by what best serves shareholders.
This model has no place in world football. Football's future cannot be dictated by the expectations of those whose first duty is to maximise financial return. Nor can the interests of national associations, leagues, clubs, players and supporters become subordinate to investor returns. Football cannot mortgage its future for financial gain.
Europe's position is clear. We will never lend this model our legitimacy. No one has the moral authority to sell what they merely hold in trust for the next generation.