Before the 'Oxygen Apocalypse', Earth was purple, the oceans green, and H₂O's oxygen safely locked away 🟣

Then, bacteria developed a quantum lockpick 🗝️⚡

The seas rusted and the ancients died out. Complex organisms burn the fuel of this cataclysm still, but pay the price by ageing 🦠

This is the story of how symmetry saves us from the flames ⚛️

Full post: https://keiran-rowell.github.io/oxygen/2026-04-02-the-oxygen-apocalypse/

#oxygen #science #scicomm #GreatOxidationEvent #photosynthesis #eukaryogenesis #quantumbiology #geology

CVE Alert: CVE-2025-12886 - Laborator - Oxygen - WooCommerce WordPress Theme - https://www.redpacketsecurity.com/cve-alert-cve-2025-12886-laborator-oxygen-woocommerce-wordpress-theme/

#OSINT #ThreatIntel #CyberSecurity #cve-2025-12886 #laborator #oxygen-woocommerce-wordpress-theme

Red, green... and sometimes even blue #aurorae visible at mid-latitudes! A rare spectacle, evidence of an intense episode of #spaceweather.

Green and red auroras result from interactions between the #SolarWind and atmospheric #oxygen molecules. Much rarer, blue emissions are caused by the excitation of #nitrogen molecules. All of these phenomena reflect specific conditions in the atmosphere and the flux of incoming particles, which #SpaceWeather models must account for: https://www.irap.omp.eu/en/2026/03/a-blue-aurora-observed-in-our-part-of-the-world-a-rare-and-revealing-phenomenon/

How Finger Oximeters Work

https://tube.blueben.net/w/hPiwho4wxLnic5ZyQJBLsh

Given sufficient electricity, we can make #Hydrogen in quantity without reforming Methane. The #Oxygen is a probably useful byproduct.
Given heat, pressure, and a catalyst, we can combine it with atmospheric #Nitrogen to make #Ammonia, a direct fertiliser, and starting point for Nitric acid and then #Nitrates. Among #AmmoniumNitrate 's uses is fertiliser for growng food.

I think we might build an Ammonia plant next to a #fission boiler, and use #heat as well as perhaps #electricity from it.

Here is a problem that has been quietly gnawing at astronomers for decades.

The standard approach to detecting #life on other worlds involves scanning #exoplanet #atmospheres for #oxygen, #methane, and #ozone, whose presence is difficult to explain without #biology.

It's a clever idea, but it carries a hidden flaw. That entire shopping list was written by studying Earth. It is, inevitably, a search for life like us.

The list of ways that #chemistry alone can accidentally mimic these #biosignature gases is growing faster than the list of new ways to detect life.

Each new false positive scenario demands even more information about the #planet to rule it out, and there is a genuine question about whether that information can ever be gathered exhaustively.

But there is a solution.

#Assembly theory doesn't ask what #molecules are present in an #atmosphere. Instead, it asks how hard they were to make.

Every molecule can be assigned an assembly index, a minimum number of construction steps required to build it from basic #chemical building blocks.

Simple molecules are easy to assemble by chance, but truly complex ones, requiring many sequential steps, don't arise without something doing a great deal of deliberate selection.

That something would then be life itself.

#astrobiology #astronomy
https://phys.org/news/2026-03-life.html

Paper by Walker et al. (2026): https://arxiv.org/abs/2603.11086