Almost-retired-academic, leaving the world of bacterial stress, lab-based evolution, and protein folding for more time to decide what to do when retired.

Birmingham
Any news at all on how long the road will be closed?
Replying to @trafficscotland
NEW β—βŒš 10:25 #A87 - Invergarry β›” CLOSED in BOTH DIRECTIONS following a collision near the Invergarry Hotel. There's also a closure where the #A82 and #A87 join. #PleaseAvoid the area, if possible. @NWTrunkRoads
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Peter Lund πŸ’™πŸ‡¬πŸ‡§πŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦ retweeted
The ospreys are back in Glen Affric again & our rewilding workshop from 11-18 May offers a great opportunity to see them! Book now - we have bursary funds available to help people with limited finances, & women are especially welcome to balance our group. alanwatsonfeatherstone.com/e…
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Peter Lund πŸ’™πŸ‡¬πŸ‡§πŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦ retweeted
Happy #InternationalDanceDay! πŸŽ‰πŸ’ƒπŸ•ΊπŸ€Έ Dance is at the heart of everything we do ❀️ We are proud to inspire children, young people and adults alike with the ethos that anyone can dance! So get your body moving and have a great day πŸ₯³
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Peter Lund πŸ’™πŸ‡¬πŸ‡§πŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦ retweeted
We need some more participants for our workshop 'A Rewilding Journey' from 11-18 May. Based in beautiful Glen Affric, it's a great opportunity for anyone interested in rewilding & we have bursary funds available. Please repost @BenGoldsmith @GeorgeMonbiot alanwatsonfeatherstone.com/e…
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Seems a little early compared to last year but did I just hear #swifts flying overhead here in Birmingham?
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Peter Lund πŸ’™πŸ‡¬πŸ‡§πŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦ retweeted
Your kindness can kill a bumblebee πŸ’” πŸ“’ Please share! Bumblebee queens are starting to emerge from hibernation. British weather isn’t always ideal and people with the best intentions can cause more harm good. Let’s change that. 🧡1/5
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Second attempt at this - I'm preparing a photo album for my Mum's b'day of AI-enhanced holiday snaps from her childhood, and trying to identify where they were taken. Prob S Wales or N Devon (definitely UK). Over to you Twitter (photos follow).
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Peter Lund πŸ’™πŸ‡¬πŸ‡§πŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦ retweeted
πŸŒŽπŸ“‰πŸŒ I did some basic energy and water calculations on the scary AMOC study (1) that's making headlines, so you don't have to. It's quite simple, so please don't let the orders of magnitude scare you off. This is a Big F*cking Deal (BFD)! First, what are we talking about here? What is the Atlantic Meridional Overturning Circulation? It's a shitload of water transporting a shit ton of heat energy North, through the Atlantic Ocean! The study starts with an AMOC strength of about 15 sverdrups, or 15,000,000 cubic meters of ocean water per second. This transports about 1 PW (1 petawatt = 1*10^15 watt) of heat North from the Southern Hemisphere and the tropics. That's about 32 ZJ (32 zettajoules = 32*10^21 joules) of heat per year. When the AMOC tips, most of this ocean heat transport stops. The obvious question people are asking is "could this happen any time soon and how?" The study (as have others, for example @DrJamesEHansen et al. (2016) (2), which is not referenced for some reason) shows that a lot of fresh water input from rainfall and Greenland ice melt could shut this thing down this century. The more fresh water is added, the slower the AMOC becomes. The tipping in the model happens at about 0.5 sverdrups (0.5 Sv, 500,000 mΒ³ per second) of fresh water input. There is a lot of fresh water waiting to add those 0.5 Sv, if only there was enough heat available to melt the ice sheet of Greenland. 0.5 Sv is 1.6*10^13 mΒ³ of water per year. Greenland holds 2.85*10^15 mΒ³ of ice, which could provide about 170 years of 0.5 sverdrups of fresh water (after which global sea levels would be over 7 meters higher). To melt 0.5 sverdrups worth of ice for a year takes 5.3 ZJ of heat. Since 1970, our greenhouse gases have caused about 450 ZJ of additional heat to accumulate in the Earth system. ~90% of that warmed the oceans. Aerosols, notably from coal plants and ships burning sulfur rich fuels, have reduced that heat accumulation. Now that we are reducing aerosols, more heat is accumulating. The larger North Atlantic Ocean region shows a spike in how much sunlight is being absorbed over recent years, while higher temperatures cause more heat radiation to space. The net effect is a spike of over 2.4 W/mΒ² above the 2000-2009 average. This spike added 4 ZJ of heat over 12-months: The record high global energy imbalance is now (2023) about 1.8 W/mΒ², which adds 29 ZJ of heat to the Earth system over a year. To make a long story short, the heat is there to melt enough Greenland ice to shut the AMOC down. And we don't need all that heat to be directed to the melting of ice, as more precipitation also contributes. And of course, we are only making the climate forcing and Earth's Energy Imbalance worse by rapidly increasing greenhouse gas concentrations while decreasing aerosols. Sorry I couldn't make this more hopeful. But numbers don't lie. (1): Physics-based early warning signal shows that AMOC is on tipping course RenΓ© M. van Westen et al. (2024) science.org/doi/10.1126/scia… (2): Ice melt, sea level rise and superstorms: Evidence from paleoclimate data, climate modeling, and modern observations that 2Β°C global warming is dangerous @DrJamesEHansen , @MakikoSato6 et al. (2016) acp.copernicus.org/articles/…
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Peter Lund πŸ’™πŸ‡¬πŸ‡§πŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦ retweeted
A "cognitive bias" is a systematic error in thinking that ruins decision-making. The 12 most powerful cognitive biases I've found:
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Peter Lund πŸ’™πŸ‡¬πŸ‡§πŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦ retweeted
This is fascinating and yet more evidence that suggests we shouldn’t dismiss the effects of synonymous mutations! Synonymous edits in the Escherichia coli genome have substantial and condition-dependent effects on fitness pnas.org/doi/10.1073/pnas.23…
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Peter Lund πŸ’™πŸ‡¬πŸ‡§πŸ‡ͺπŸ‡ΊπŸ‡ΊπŸ‡¦ retweeted
This little figure sums up the theory developed by our findings. Read the whole paper here: doi.org/10.1038/s41467-024-4…
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Like these trees, not been planted in a straight line, but grown from the fertile remains of a fallen tree (a "nurse log") in the Hoh Rainforest.
Dead trees are the life source for the new forest that will emerge to fill the spaces they have created by falling.
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Happy New Year everyone. Celebrating with a drop of this fine 15 year old malt - having climbed Ben Rinnes in ridiculously windy weather a few days back, it feels like the right thing to do.
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