David Blanchflower BSc

a–d, Integrated non-dimensional pyrite content (a,c) and isotopic composition (b,d) exported from the sulfidic anoxic zone as functions of Γ0 and Da*. Panels a and b were calculated using the global averaged FeHR content, Ψ0 = 10, whereas panels c and d were calculating using Ψ0 = 1 as a low-iron endmember scenario. e, Example profiles showing predicted non-dimensional species contents/concentrations (OC, Γ; sulfate, Σ; sulfide, η; FeHR, Ψ; and pyrite, Π) and isotopic compositions (d34S_SO4, d34S_S^2- and Δpyrite) as functions of non-dimensional depth, ζ, for three contrasting parameter-space conditions (marked as coloured circles in a–d). Stippled lines and lighter colours represent low Ψ0 whereas solid lines and darker colours represent high Ψ0 conditions. Vectors in panel a represent the expected change in global-average Γ0 and Da* for each bathymetric region when using the oxygen-penetration depth (vector base) vs the mixed-layer depth (vector tip) as model input. Boxes in panel b represent the 5th to 95th percentile range of Γ0 vs Da* extent observed for each bathymetric region in the modern ocean. Vectors in panel d represent global changes to various Earth-system evolution processes discussed in the main text. Sed. rate, sedimentation rate.

A big reason we have an oxygenated atmosphere is because there is a lot more pyrite burial than pyrite oxidation (which wasn't always the case). 🧪⚒️

Link: www.nature.com/articles/s41...

I've just been outside. Sunny and hot. You'd think it was summer!

Close up photo of the Moon at 85%

The Moon tonight here in #SantaBarbara!
#MoonPhotography #MoonPhotos #MoonShots #Photography #ChingaLaMigra

Settings:
Canon T5i
Sigma 150-600mm + Canon 1.4x Extender
Focal length: 840mm
F-stop: f/9
Exposure time: 1/250
ISO: 400
#Moon phase: Waning 85%

👸🏼 On Sat 14 March we start a new series at Museum In The Park: @enortonhistory.bsky.social at 2pm on ‘Women Who Ruled The World’

🎭 Dr Daniel Swift: 25/04
📗 @kate-werran.bsky.social: 23/05
⛪️ Luke Sherlock: 13/06
🐱 Charlie Creed: 04/07
🏰 Phil Downing: 01/08
🌹 @anniegarthwaite.bsky.social: 29/08

No problem. Useful to know.

It's a weird weird world, Sarah😉

UK sees highest temperature of the year, snow and blood rain all in the last 48hrs Spring has started on a relatively dry and mild note but as Chris Fawkes explains, a change to wetter, windier and colder weather is on the way next week.

UK sees highest temperature of the year, snow and blood rain in last 48hrs. 🧪 www.bbc.co.uk/weather/arti...

Deadly storms and tornadoes strike US state of Michigan A series of tornadoes tore through several cities, uprooting trees and destroying homes.

Deadly storms and tornadoes strike US state of Michigan. Spectacular and terrifying. 🧪 www.bbc.co.uk/news/videos/...

This iceberg was once the biggest in the world. Now it has just weeks left - BBC News A23a was once twice the size of Greater London but now its 40-year journey is coming to an end.

'This iceberg was once the biggest in the world. Now it has just weeks left.' 🧪 www.bbc.co.uk/news/resourc...

Jupiter is still king of the planets in March 2026. Here's how to see it at its best | BBC Sky at Night Magazine How to observe the planet Jupiter in the night sky in March 2026. Key dates and tips for observing the gas giant planet.

Here's how to see Jupiter at its best this month. 🔭 🧪 www.skyatnightmagazine.com/news/jupiter...

Very iffy.

Darkness frames a single rectangular window, in which a grey London skyline and sky is seen. BT Tower is the focus.

Good morning! How are you feeling? I like to put out something upbeat each day, but today the toll of pain, lack of sleep, open surgery, medication etc is getting to me a bit. Could you send cute cat pictures? But nothing too funny, because laughing really hurts! Okay, I got this. Yeh. #StayBright

Sleep well Paulette and have a great weekend 😴🙂

Green northern lights in background with clouds above and gardens in the foreground.

It is exactly 10 years ago to the day since I took my first photograph of Aurora. Here's the pic, taken from my back garden. 6 March 2016. 🔭 🧪 🎨 #astrophotography #SciArt #photography #StormHour #ThePhotoHour

On Geordieness: accents and attitudes Sometimes when I share that I’m from Newcastle, harmful stereotypes and assumptions about us, and people from the North in general, become apparent

On Geordieness: accents and attitudes

Sometimes when I share that I’m from Newcastle, harmful stereotypes and assumptions about us, and people from the North in general, become apparent

northeastbylines.co.uk/region/tynes...

I vote he sends them to the Sun.

Tonight the Waning Gibbous Moon appears close to Spica (Alpha Virginis). New Moon is 0123UT 19 March 2026.🔭 🧪

Solar panels installed at 116-year-old Yearsley Pool in York It is estimated the panels could save £23,000 a year and reduce CO2 emissions at the swimming spot.

Solar switch at pool once powered by factory steam. 🧪 www.bbc.co.uk/news/article...

Tomorrow I'll be attending/staggering tmanother night time Newcastle match. So many times this season I've been to 8pm and later kickoffs. This latest one has the potential for extra time and pens. Hopefully I'll stay awake. Getting a bus will be 'fun.' They tend to be thin on the ground after 10pm.

I've used computers since 1981. Studying, programming, IT Support, tutoring. Seen so many advancements and yes GenAI is iffy with a capital IF!

Robot 'mice' developed to inspect Large Hadron Collider The UK Atomic Energy Authority developed the robot with the European nuclear research centre, Cern.

Robot 'mice' developed to inspect hadron collider. 🧪 www.bbc.co.uk/news/article...

Peterborough Cathedral to host giant dinosaur skeleton model It will be the first time the colossal beast's model is displayed outside of London.

Cathedral to host giant dinosaur skeleton model. 🧪 www.bbc.co.uk/news/article...

London doctor carries out first UK remote robotic surgery The milestone procedure went well, with patient Paul Buxton saying he felt

Surgeon's op on patient 1,500 miles away a UK first. 🧪 www.bbc.co.uk/news/article...

Got windows.

I've always liked the naming in "Logan's Run." David 12 has an appeal.

I've just been outside. I'll avoid going there again.

Tiny possum and glider thought extinct for 6,000 years found in remote West Papua The discovery of two lost species is 'exceptional' and rare, scientists say

Tiny possum and glider thought extinct for 6,000 years found in remote West Papua. 🧪 www.bbc.co.uk/news/article...

With luck.

March is a great time to spot the odd glow of zodiacal light. Here's how to see it The zodiacal light is at its most visible on the nights surrounding the spring and autumn equinoxes.

March is a great time to spot the odd glow of zodiacal light. Here's how to see it The zodiacal light is at its most visible on the nights surrounding the spring and autumn equinoxes.

This is an idea that is so ridiculous it would give ridiculous a bad name. 🔭 🧪