Original post on mastodon.social

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 […]

Research reveals that nickel and urea concentrations delayed Earth's oxygenation, with implications for identifying biosignatures on other planets. 🌍🔬 Link: https://tinyurl.com/29b4p9p4 #GreatOxidationEvent #EarthScience #Astrobiology

Original post on fosstodon.org

On rocks, from Mineral Cup’s admin, @mikamckinnon
She writes:
#Hematite is a key mineral in banded iron formations. And BIFs are my BFFs

Very well done! BIFs make their appearance around minute five.

www.ted.com/talks/mika_mckinnon_do_y...

Thanks for the heads up […]

A timeline of the Earth's oceans, showing the availability of trace metals, oxidation state, and constraints on the evolutionary development of Mo-, Fe-, and V-nitrogenases, from the Archean to the present. From Rucker and Kaçar, 2024, Trends in Microbiology.

Today, molybdenum is one of the most common trace elements in the ocean due to oxidative weathering of #Molybdenite. But in the Archean the oceans were reducing, and molybdenum was scarce.

Other nitrogenases evolved to use other transition elements, but […]

[Original post on fosstodon.org]

The Great Oxidation Event: How Oxygen’s Rise Reshaped Our Planet, Not All At Once Earth's Great Oxidation Event: From a toxic, anoxic past to an oxygen-rich future, this pivotal planetary transformation was a complex, multi-stage process.

Earth's Breath: Deconstructing the Planetary Transformation Driven by Oxygen

#GreatOxidationEvent #EarthScience #AncientEarth #OxygenRevolution #FactRage #FactRageNews

tglm.us/U0wI1

Will We Ever Learn?

Will We Ever Learn?

#Evolution #Climatechange #Greatoxidationevent #Photosynthesis #Fossilfuels

sciencehumor.io/biology-memes/will-we-ev...

Molecular clock analysis shows bacteria used oxygen long before widespread photosynthesis In a new study published in Science, researchers from the Model-Based Evolutionary Genomics Unit at the Okinawa Institute of Science and Technology (OIST) and their international collaborators have constructed a detailed timeline for bacterial evolution and oxygen adaptation. Their findings suggest some bacteria could use trace oxygen long before evolving the ability to produce it through photosynthesis.

3-Apr-2025
#MolecularClock analysis shows #bacteria used #oxygen long before widespread photosynthesis
Scientists use the #GreatOxidationEvent and how organisms adapted to it to map bacterial #evolution

https://www.eurekalert.org/news-releases/1078069 #science #astrobiology

Oxygen Metabolism Emerged on Earth Before The Great Oxidation Event, Study Reveals Bacteria got a head start.

Oxygen Metabolism Emerged on Earth Before The Great Oxidation Event, Study Reveals #Science #EarthSciences #Geochemistry #GreatOxidationEvent #OxygenMetabolism #EarthHistory

Onset of coupled atmosphere–ocean oxygenation 2.3 billion years ago - Nature The Great Oxidation Event represents a tipping point in Earth’s O2 mass balance—when more O2 was being produced than destroyed—that forever changed the habitability of worldwide oceans.

Onset of coupled atmosphere–ocean oxygenation 2.3 billion years ago
#GreatOxidationEvent #GOE #science

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