Earth's rotation has been slowing down ever since its formation 4.5 billion years ago, giving us longer days as a result. We may not notice the slowing, but over eons, it can create significant changes, like the oxygenation of Earth's atmosphere, for example. @ScienceAlert explains:

https://flip.it/3ZHF6_

While oxygen, carbon, hydrogen, and nitrogen make up 96% of most human bodies, my body is composed of sulfur, argon, calcium, and samarium.

Globally, 2 out of 5 pregnant women and young children are affected by anemia, a condition in which the number of red blood cells falls below normal.

This means less oxygen than normal is being delivered throughout the body.

@stefano

Blood The fuel of our Corpus
It's fascinating to know how Blood works, it's magnificent to see how Blood changes Colour when it's in contact with oxygen.

It's refreshing to read that you're in a country where the taxes are actually used for the people, something that my country still needs to work on
The taxes are simply used by the politicians for themselves, then they pay off certain things that they have to pay off and only when elections are close they take the time to patch up some roads, while road work is something that needs to go on 24/7, so over here taxes are not used in a proper manner by anyone who runs government.

It's also refreshing to see how other people think about blood in their own Corpus.

And what's overly wonderful to read is that you actively make sure that your body is in a proper condition

Weekend #Plankton #Factoid
The most common #phytoplankton on the planet was only discovered in 1986. Prochlorococcus is a genus of picoplankton (~½ micron) #photosynthetic bacteria found in the Sargasso Sea by Penny Chisholm, Robert Olsen +, and eventually across all tropical oceans. It accounts for up to half the world's #oxygen production. Recently, a relationship with heterotrophic #bacteria was found, reinforcing its importance to the #carbon cycle. #ClimateChange
https://phys.org/news/2025-01-abundant-phytoplankton-global-network-marine.amp

My take that no one asked for: we should be paying Brazilians more for the oxygen that their forests produce than for the steaks that they produce after cutting down the forests.

How much do we pay for oxygen? $0. Does that mean it is devoid of value? Of course not. It simply means that our markets are centered on absolutely the wrong things.

https://newsie.social/@allthebrazilianpolitics/113798471684837521

#deforestation
#agriculture
#meat
#LandUseChange
#ecocide
#ClimateChange
#oxygen

Just finished this #book, and learned something very interesting and not very well known...

The #dinosaurs became dominant after two #MassExtinction events (the first was the big one at the end of the Permian).

During this period, the #oxygen levels in the #atmosphere were much less. The dinos already had "bird-like" respiratory systems (with air sacks, little or no dead space) so they could run, etc. faster and longer than the non-dino species.

Just another way modern #birds are living dinosaurs!

These super-efficient respiratory systems are one of the adaptations that make flight possible!

Triple #oxygen isotopes of #lunar #water unveil indigenous and cometary heritage: https://www.pnas.org/doi/10.1073/pnas.2321069121 -> "Our data support an indigenous primary water source for the Moon. This enstatite-dominant source may have been an initial reservoir from the Earth-Moon impact or a consequence of delivered materials in the early growth stages of the Moon. Cometary contributions are indicated by the extremely negative δ18O and positive Δ′17O values observed in our data" -> https://press.vub.ac.be/vub-study-reveals-origins-of-lunar-water-and-its-connection-to-earths-early-history

Scientists Peered Into A Secret Antarctic Lake Hidden Beneath The Ice — And Uncovered A Never-Before-Seen Ecosystem
--
https://www.livescience.com/planet-earth/antarctica/scientists-peered-beneath-a-frozen-antarctic-lake-and-uncovered-a-never-before-seen-ecosystem <-- shared technical article
--
https://doi.org/10.1038/s43247-024-01842-5 <-- shared paper
--
#GIS #spatial #mapping #radar #GPR #groundpenetratingradar #remotesensing #Antarctica #LakeEnigma #ecosystem #microbial #water #life #biology #microorganisms #imagery #microbialmats #oxygen #photosynthesis #ice #light #Patescibacteria #extremophiles

#WeekendReading: Mahmoudi et al., on the pre-enzymatic (secretion) #biogeochemistry of Earth. Some interesting implications to the accumulation and breakdown of organic matter (also, #oxygen and #carbon cycles).
https://www.nature.com/articles/s41561-023-01266-4

Via #CTV News #Montreal @ 9:36am EDT on Sept 06, 2024

The decline in the amount of #oxygen in the seabed of the #StLawrenceRiver is of concern to researchers from the governments of #Canada and #Quebec, who on Thursday released the State of the St. Lawrence 2024.

#Environment #Climate #ClimateChange

https://montreal.ctvnews.ca/the-waters-of-the-st-lawrence-are-warming-and-the-amount-of-oxygen-is-decreasing-1.7027748

Busy last few months... I've been #josephpriestley most of the Summer as part of the 250th anniversary of the discovery of Oxygen! #scicomm #oxygen #calne #wiltshire #science

In the #soil and rocks beneath our feet there lies a vast #biosphere with a global volume nearly twice that of all the world’s oceans.

Researchers have assumed that many of those subterranean realms are #oxygen-deficient dead zones inhabited only by primitive #microbes keeping their #metabolisms at a crawl and scraping by on traces of nutrients.

As those resources get depleted, it was thought, the underground environment must become lifeless with greater depth.

https://www.quantamagazine.org/underground-cells-make-dark-oxygen-without-light-20230717/

Something is pumping out large amounts of oxygen at the bottom of the #Pacific #Ocean, at depths where a total lack of sunlight makes #aphotosynthesis impossible.

Mystery #oxygen source discovered on the #seafloor — bewildering scientists
A chemical reaction could be producing #oxygen by splitting water molecules, but its source of energy remains unknown. https://www.nature.com/articles/d41586-024-02393-7

Part of the ongoing #rewilding & #nature #restoration work I do with fellow caring local #environmentalists is planting #EelGrass in areas where we are trying to bump up #ocean #oxygen levels & bring back more #biodiversity in the seas. Eel grass purposeful planting into ocean beds(with divers) & beaches at low tide is an essential part of restoring biodiversity back to human damaged areas in ocean.

#Chemistry pioneer #JosephPriestley co-discovered #oxygen and was a supporter of both the #American and #French #Revolution. He was also a ‘dissenter’ of any enforced state #religion , and for this he was hounded out of #England and settled in #Pennsylvania. The highest honor given by the #American Chemical Society is its Priestley Medal.

@Wikipedia is giving him some attention today! https://en.m.wikipedia.org/wiki/Joseph_Priestley