Carlos Rey Castro

Chemical controls on iron distributions across the subsurface South Pacific Ocean Iron and nitrogen are the primary nutrients that limit productivity in the ocean. While nitrogen cycling is largely controlled by biology, iron cycling is strongly determined by chemistry because iron...

🚨 New preprint alert! 🚨

How does chemistry shape the ocean’s iron cycle?
In our new study, we show that the chemical diversity of organic matter controls how iron is stabilized or lost in the subsurface South Pacific Ocean.

chemrxiv.org/engage/chemr...

EPA tells scientists to stop publishing studies, employees say Staff from the EPA’s Office of Water were summoned to a town hall meeting this week and told to pause the publication of most research, pending a review.

Breaking news: The Environmental Protection Agency has ordered scientists in at least one of its research offices to immediately pause almost all research and stop publishing their studies.

Academic authors, here's a peek into the black box of journal publishing from an journal editor if you can bear it:

👏👏👏 👏👏

La paradoja de Parrondo podría ayudar a frenar el cáncer La paradoja de Parrondo es un fenómeno de la teoría de juegos que desde hace años intriga a matemáticos, físicos y economistas.

La paradoja de Parrondo podría ayudar a frenar el cáncer
@edocet.bsky.social en @culturacientifica.com
culturacientifica.com/2025/08/19/l...

I now also have a (work in progress) list of #DataViz specific resources as well!

Link: nrennie.rbind.io/data-viz-res...

You can find links to tools, papers, books, blogs, and websites that are related to data visualisation. I'll be adding more resources soon 📊

#RStats #Python

3I/ATLAS. A cat on my balcony (En español  aquí )  S ummary      Recently, a new interstellar object passing through our solar system has been discovered: 3I/ATLAS. Thi...

Here in English tinieblasyestrellas.blogspot.com/2025/08/3iat...

Exclusive: Medical journal rejects Kennedy's call for retraction of vaccine study An influential U.S. medical journal is rejecting a call from Health Secretary Robert F. Kennedy Jr. to retract a large Danish study that found that aluminum ingredients in vaccines do not increase health risks for children, the journal's editor told Reuters.

"Exclusive: Medical journal rejects Kennedy's call for retraction of vaccine study"

Beautiful blog post by @hectorsocas.bsky.social where he argues that the “alien ship” idea for 3I/ATLAS is an example of poor scientific reasoning: post-hoc coincidences, cherry-picked data, and unfalsifiable claims. On the contrary, useful science requires predictive, testable hypotheses.

Information is Beautiful Distilling the world's data, information & knowledge into beautiful infographics & visualizations

“Simple explanations are often compelling & convincing but not always accurate”

informationisbeautiful.net/visualizatio...

Trump’s budget takes aim at gold standard measurement of atmospheric carbon dioxide OPINION: “President Trump, a renowned climate change denier, has shown repeatedly that he has no use for scientific data that disproves his preconceived assumptions,” David Ho writes.

I wrote about the Keeling Curve — our most iconic CO₂ time series — for @sfchronicle.com.

"The Keeling Curve is valuable to science, but it is also a treasure that belongs to humanity as the most poignant indication of our impact on the environment and as a testament to our ability to document it."

El Gobierno promete 400 millones de euros para traer a España el Telescopio de Treinta Metros que Trump quiere cancelar El Ministerio de Ciencia impulsa la construcción del mayor observatorio del hemisferio norte en la isla de La Palma en lugar de Hawái

El Gobierno promete 400 millones de euros para traer a España el Telescopio de Treinta Metros que Trump quiere cancelar

elpais.com/ciencia/2025...

Gracias, Francis! Disculpa el despiste, voy escuchando vuestros episodios a trozos, se me debió de despistar esa parte… Un saludo!

Cc @hectorsocas.bsky.social @emulenews.bsky.social

Observation of charge–parity symmetry breaking in baryon decays - Nature The LHCb experiment at CERN has observed significant asymmetries between the decay rates of the beauty baryon and its CP-conjugated antibaryon, thus demonstrating CP violation in baryon decays.

Nature research paper: Observation of charge–parity symmetry breaking in baryon decays

go.nature.com/3UjDe7K

Proof of the Nernst theorem - The European Physical Journal Plus The Nernst heat theorem is proven from purely thermodynamic arguments connected with the second law of thermodynamics. The proof stipulates that $$T=0$$ T = 0 is formalized by a Carnot thermometer, an...

@hectorsocas.bsky.social @emulenews.bsky.social Si pudiese hacer una lista de deseos para la vuelta de vacaciones de @pcoffeebreak.bsky.social, me pediría escuchar el análisis de alguno de estos papers…

www.nature.com/articles/s41...

link.springer.com/article/10.1...

If you want people in the Fediverse (e.g., Mastodon) to be able to see your posts, just follow @ap.brid.gy and your posts will appear there.

More info here: fed.brid.gy

👨‍🔬This article is part of the PhD thesis of Ricardo Pedroza, and the result of the hard work of our coauthors Pablo Lodeiro, Calin David both from
@udl.cat and J.L. Barriada (from @udc.gal).
DOI: t.co/blcqwKY4Ng

🙏 Acknowledgments:
This project was funded by:
The EU H2020 research and innovation programme under Marie Skłodowska-Curie grant agreement Nº801586.
@ageinves.bsky.social (AEI) through grants PID2019-107033GB-C21, PID2020-117910GB-C21, and PID2022-140312NB-C21.

Barplot showing the adsorption capacity of PLA (in micrograms of Cr per gram of PLA) as a function of the initial redox state of Chromium and the PLA state (pristine, humic-coated, tannic-coated, humic in solution, tannic in solution or UV-aged). Source: own

Here’s the graphical abstract summarizing our work.

What do you think about biodegradable plastics as tools for pollution mitigation? Let’s discuss! 👇

#ScienceCommunication

💡 Why does this matter?
Biodegradable plastics, like PLA, aren’t just "eco-friendly"; they can also transport pollutants or, potentially, act as tools for environmental remediation!
More details in the original paper: authors.elsevier.com/a/1kRgUB8cd4...

#Plastics #PollutionControl

🌟 Tannic acid stands out:

Reduces Cr(VI) to less toxic Cr(III)
Boosts adsorption significantly

These findings help us understand the risks of microplastics in aquatic environments and their potential applications in pollutant mitigation.

#Environment

🔍 Key insights:
1️⃣ UV-aging increases chromium adsorption:
- Cr(III): 60x
- Cr(VI): 15x
2️⃣ Organic matter (e.g humic & tannic acids) facilitates redox reactions, affecting Cr adsorption. Its effect depends on whether it is dissolved or as a surface coating.
#Nanotechnology

🧪 How do biodegradable microplastics interact with toxic metals?
Our latest study explores the role of photooxidation and organic matter in chromium adsorption by PLA (polylactic acid) in water. A 🧵:
#Microplastics #EnvironmentalScience #Sustainability

Hi, I'm Carlos Rey-Castro, I am professor at UdL and AGROTECNIO research center (Spain). My personal website is carlosreycastro.github.io and my ORCID is orcid.org/0000-0002-92.... I was unsure about the most adequate list so I also asked the Geosciences feed. Sorry for double requests!

Hi, I'm Carlos Rey-Castro, I am professor at UdL and AGROTECNIO research center (Spain). My personal website is carlosreycastro.github.io and my ORCID is orcid.org/0000-0002-92.... If you think I should belong to a different list please let me know. Thank you!!!

If Bluesky seems dead or low activity on your end it might be that you haven't yet made the most of its design. It's different from Twitter in some key ways so you have to interact differently. I'm writing these tips below from my non-techy perspective, techies please weigh in if I get things wrong: