I am going to stick some triggers warnings in here, and none of this is a "cry for help" or wanting sympathy, it's context. This dismissal of the impact of burnout is harmful. Whereas @carladenyer.bsky.social acknowledgment is important. 1/5

Lovely event honouring Nick Drake last night.

Great show by @misterabk.bsky.social in Cambridge today! (And so I do my job: @algebraist.bsky.social, you should go and see the postponed Canterbury show on Sunday!)

The UK must immediately and unequivocally suspend support for the US military. The Government have tried to appease him, then they tried to say they're standing up to him. Words aren't enough - it's time for action.

The place to be today, at the @togetheralliance.bsky.social march! And great to hear @zackpolanski.bsky.social speak for the second weekend in a row 😀 Hope is in the air!

Last chance to get your ticket for tonight's show at the Portland Arms in Cambridge, as part of @cambridgefestival.bsky.social, where you can hear us communicate science through the medium of stand-up comedy! www.eventbrite.co.uk/e/the-variab...

Zack has definitely made hope normal again! Excellent speech as usual, and what a turnout for a day of leafletting this has managed to attract 💚

In #MathsToday, while the teams work on the shuttle rounds, we get to have a look at the short-listed posters on Voronoi diagrams. @ukmathstrust.bsky.social

Looking forward to today's @ukmathstrust.bsky.social STMC National Final in Manchester! Good luck to all the teams taking part 😀

Getting snow where you are? Did you know that there are 121 categories of snowflake? ❄️ This graphic is an old favourite which gives an overview of the 39 intermediate categories: www.compoundchem.com/2014/12/10/s... 🧪

Merry Christmas to everyone who celebrates! 🧪

It's Christmas Eve and the final day of #ChemAdvent! We're finishing off with Christmas pudding and why you shouldn't hide a coin in the mixture as was customary in the past 🪙 #ChemSky 🧪

I learned a fair bit while writing this question about candles (part of our festive calendar of questions) the other week. Check it out if you want to learn a bit too! #ChemChat🧪

Always great fun, with the likes of @algebraist.bsky.social and @heerpal.bsky.social!

How do Christmas crackers work? Test your chemistry knowledge and skills while learning some history of chemistry: isaacscience.org/questions/ch... #ChatChemistry #ITeachChem #RealTimeChem #EduSky 🧪

Spend a merry moment or two pondering this moments question: isaacscience.org/questions/me... #ChatPhysics #iTeachPhysics #SciTeachUK #EduSky ⚖️

Thank you to all of our student and teacher users, you have reached 200 million question attempts! #SciTeachUK #EduSky

Today's question uses the core GCSE and A Level Chemistry skill of calculating empirical formulae on two compounds responsible for the bitter taste (to some!) of Brussels sprouts: isaacscience.org/questions/bi... #ChatChemistry #ITeachChem #RealTimeChem #EduSky 🧪

A bit late kicking off #ChemAdvent day 1, but here we are! This year I'm finding chemical connections between some previous ChemAdvent editions 🧪 First up, earthy pyrazines are the connection between the smells of chocolate and green bean casserole 🍫

Every day of December, in the lead-up to the Christmas holidays, we will be posting a seasonal question from our platform. The questions will be linked to from: isaacscience.org/pages/202512... #ChatPhysics #iTeachPhysics #SciTeachUK #EduSky🎄

#OnThisDay in 1859, Charles Darwin's On the Origin of Species was first published. Much of the original manuscript was used as scrap paper by Darwin's children. On the back of this painting of a house is an original manuscript page from Origin! #CambridgeUniversityLibrary (DAR 185)

Happy bonfire night! Enjoyed giving a quick talk about the science of fireworks at the Ray Dolby Centre tonight. Since I couldn't do the live demos there, they were pre-recorded in the morning, so here they (see comments) are for everyone's benefit! #ITeachChem #RealTimeChem #EduSky #ChatChemistry

Teachers! View our Competitions Calendar and sign up here: ukmt.org.uk/competitions #MathsToday #UKMT #MathsCompetitions

We're hoping to avoid any interview horror stories this Halloween 👻 We've teamed up with @brasenoseoxford.bsky.social to host 11 online interview workshops 3–17 November for anyone applying to @cam.ac.uk or @ox.ac.uk for undergraduate courses. Find out more & sign up:

In #MathsToday, welcome to Bluesky, @ukmathstrust.bsky.social Looking forward to seeing some of you at the upcoming TMC development weekend 😃

I'll miss my official "Welcome to bye-fellowship at Catz" dinner this evening as I'll be in London watching Operation Mincemeat, but I've managed to pop in for lunch and a cuppa at least!

Applications for the STEM SMART programme are open for Year 12 (or equivalent) state school students until the 31 October 2025. Watch our video: www.tiktok.com/@cambridgeun... Read more and apply: www.undergraduate.study.cam.ac.uk/stem-smart #EduSky #SciSky

Please enjoy today, 25/9/2025, the last square date until 2116 (5^2/3^2/45^2).

Celebrating Faraday's birthday at his lab ⚗️ #RealTimeChem #ChemSky #SciSky

The Home Office claiming there is no evidence that one moved to the UK with one's parents, as a child, hits rather close to home... (Lest a team turn up at my door, I did, after many stressful months, get the decision to deny me permanent residence overturned and indeed am now a British citizen.)

It's been another successful STEM SMART residential this year, hosted in our new RDC building this time. Thanks to everyone who supported the event: the students really appreciated it!

A really enjoyable event every year. Great to meet so many new teachers as well as seeing returners again. Lots interested in chemistry this year: hope the keenest ones enjoyed the detour to @stcatharines.bsky.social to see the orbitals exhibit 😀 Have a well-deserved summer break! #ChatChemistry

Do you have experience teaching science at secondary/sixth form? Come join us at Isaac Science as a project biologist, chemist or physicist! We're a small, friendly team and the work is very rewarding. #iTeachPhysics #ChatPhysics #iTeachChem #ChatChemistry #iTeachBio #ChatBiology #SciTeachUK #UKEd

First Cambridge Open Days with Physics based in the new RDC building have been a success, though the weather has been rather too hot... Thanks to everyone who stopped by, and good luck to everyone planning to apply!

Congratulations to the 47 students who attended the 2025 Senior Physics Challenge on an excellent week of quantum mechanics problem solving and experiments! #iTeachPhysics #EduSky #ChatPhysics

Everything would be awesome if we could build the Catz periodic spiral in LEGO! A design has been created & needs 10k votes before LEGO will consider it so let's get voting at ideas.lego.com/proje.... Learn about the original: caths.cam.ac.uk/abou... @chemlibcam.bsky.social‬ ‪@chemistryworld.com‬

The Beamish Museum (County Durham) is advertising for a Learning Coordinator (STEM): www.jobtrain.co.uk/beamishmuseu... 🏛️🎓

Euro notes contain a pigment which includes (very appropriately!) the rare earth metal Europium. It glows red under UV light. On this week's Rare Earth on BBC Radio 4 we dug deep into the environmental benefits & costs of rare earths and other critical minerals. Do listen! www.bbc.co.uk/progra...

In #MathsToday, it is time for the UKMT Team Maths Challenge National Final! Good luck to all the teams taking part 🙂

🥽Goggles or 👓 safety specs – how are they labelled in your classroom or lab? edu.rsc.org/endpoint/do-... #iteachchem

I wrote an article for @rsc-eic.bsky.social on safety specs vs goggles in schools! The link in the quoted post is broken, but try edu.rsc.org/endpoint/do-...

Do you know your safety specs from your goggles? Chemist @stareatair.bsky.social‬ shares why it's crucial we all know what to use when 👇 edu.rsc.org/endpoint/do-...

Quick poll time, it would be very useful for our work to know how many labs you have in your school. Sadly we can't do this via a voting poll, so please just reply with how many labs (teaching labs + prep rooms) you have. Please also share this with others Thanks for your help in this 👍

In #MathsToday, time for the UKMT AGM at the London Mathematical Society's De Morgan House. As a chemist, couldn't help noticing it opened on Mole Day!

And so the building we moved into in January, new home of the @cambridgephysics.bsky.social, is now officially open!

Thanks @chemistryworld.com, #Chemsky please vote to help @iupac.org to define key molecular machinery terms 👍 🔗 www.chemistryworld.com/opinion/4021... Task Group Members: @aprahamian.bsky.social @deanst.bsky.social @sgoldup.bsky.social @daisypooler.bsky.social Carson Bruns Pierangelo Metrangolo

New design of the Isaac page coming soon, with chemistry content featured more prominently than before!

You can beat Zr, Rf and Pr with "quicksilver" though 😉

Well done everyone! Was a pleasure to lead the Cayley marking this year and to have so many great volunteers contributing their time and expertise, such as @ridermeister.bsky.social, @algebraist.bsky.social, @heerpal.bsky.social and also great to finally meet @dannykodicek.bsky.social #MathsToday

Some data on the success of our STEM SMART programme! #ChatChemistry #EduSky