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Investigating the rise of oxygenic photosynthesis


About 2.4 billion years ago, at the end of the Archean Eon, a planet-wide increase in oxygen levels…
Respiration key to increase oxygen in the brain


Contrary to accepted knowledge, blood can bring more oxygen to mice brains when they exercise because the increased…
The good side of carbon monoxide

November 28, 2019

Most people think of carbon monoxide as harmful, and with good reason — the colorless, odorless gas sends…
Exploring oxygen supersaturation in aquatic habitats

September 25, 2019

Reduced oxygen availability in aquatic habitats is a growing threat to marine ecosystems worldwide. The lack of oxygen…
Oxygen depletion in ancient oceans caused major mass extinction

September 2, 2019

Late in the prehistoric Silurian Period, around 420 million years ago, a devastating mass extinction event wiped 23…
Rice University bioengineers developed fluorescent microparticles that can be suspended in hydrogel scaffolds seeded with live cells. The microparticles can be used to monitor for the presence of oxygen in hydrogel cultures that help injuries heal. Illustration by Reid Wilson (cropped image)
Soft micro-monitors keep tabs on oxygen in new tissues

July 26, 2019

It’s important to know one’s new cells are getting nourishment. Rice University scientists are working on a way…
Carbon hides in sediment, keeping oxygen in atmosphere

June 17, 2019

A new study by researchers at the Woods Hole Oceanographic Institution and Harvard University may help settle a long-standing question:…
Old ice and snow yields tracer of preindustrial ozone

June 13, 2019

Using rare oxygen molecules trapped in air bubbles in old ice and snow, U.S. and French scientists have…
Konstantinos P. Giapis with his reactor that converts carbon dioxide to molecular oxygen.
Comet Inspires Chemistry for Making Breathable Oxygen on Mars

May 28, 2019

Science fiction stories are chock full of terraforming schemes and oxygen generators for a very good reason—we humans…
Low ocean oxygen levels can blind sea creatures

May 22, 2019

Scientists at the Scripps Institution of Oceanography at the University of California, San Diego, have found that low…
Chemists take a closer look at the spot where water meets air

May 14, 2019

Water, despite its central place in so many processes vital to life on Earth, remains a chemical mystery…
Low Oxygen Levels Could Temporarily Blind Marine Invertebrates

May 13, 2019

First study to demonstrate vision in marine invertebrates is highly sensitive to the amount of oxygen in water.…
Princeton geoscientists find new fallout from ‘the collision that changed the world’

April 29, 2019

“These results are different from anything people have previously seen,” said Emma Kast, a graduate student in geosciences and the lead…
Mystery of submerged beetles’ breathing solved

April 15, 2019

The mystery of how aquatic beetles breathe in underground water has been solved by researchers from the University…
‘Featherweight oxygen’ discovery opens window on nuclear symmetry

April 3, 2019

Researchers at Washington University in St. Louis have discovered and characterized a new form of oxygen dubbed “featherweight…
Is it true that air is 21 % oxygen? For most of us – not really

March 30, 2019

In school you learn that the air you are breathing contains 21 % oxygen, 78 % nitrogen and…
In ancient oceans that resembled our own, oxygen loss triggered mass extinction

March 29, 2019

Roughly 430 million years ago, during the Earth’s Silurian Period, global oceans were experiencing changes that would seem…
Chromatin changes rapidly in response to low oxygen, study finds

March 19, 2019

Research by Professor Sonia Rocha and her team at the Institute of Integrative Biology reveals new insights into how cells respond to…
Oxygen levels changed in the past 2 billion years more than previously believed

March 16, 2019

Earth’s atmosphere is about 21 % oxygen – this fact is pretty much in every handbook of natural…
Ancient rocks provide clues about Earth’s early history

February 26, 2019

Earth’s vast oceans started becoming oxygenated on large scales and great depths long before scientists previously recognized, according…
In Waters Almost Completely Devoid of Oxygen, Thriving Fish Populations

December 10, 2018

Scientists from Scripps Institution of Oceanography at the University of California San Diego and the Monterey Bay Aquarium…
Skin-like sensor maps blood-oxygen levels anywhere in the body

November 9, 2018

Injuries can’t heal without a constant influx of blood’s key ingredient — oxygen. A new flexible sensor developed…
Model Challenges Traditional Beliefs About Red Planet’s Habitability

October 26, 2018

A team led by scientists at Caltech and the Jet Propulsion Laboratory (JPL), which Caltech manages for NASA,…
New Drug Could Sustain Oxygen-Starved Hearts

October 24, 2018

Running low on oxygen is a major danger for any of your body’s tissues, but the heart is…
The new research shows the benefits of ventilating horses undergoing surgery with a mixture of helium and oxygen. Image credity: Klaus Hopster, University of Pennsylvania
Ventilating with mixture of helium and oxygen improves outcomes for horses in surgery

October 3, 2018

A horse in general surgery is an awkward sight. For the best access, the animals may be placed…
To change a catalyst’s electrochemical properties, just ‘shuffle’

October 3, 2018

A standard deck of playing cards will feature the same individual cards, no matter how much you shuffle…
Disappearing into thin air: harnessing oxygen drop could eliminate cancers without harming healthy tissue

September 3, 2018

Hypoxia arises because tumours often grow faster than their blood supply, causing oxygen deprivation, which forces cancer cells…
Weaponizing oxygen to kill infections and disease

August 28, 2018

The life-threatening bacteria called MRSA can cripple a hospital since it spreads quickly and is resistant to treatment.…
Sulfur analysis supports timing of oxygen’s appearance

July 24, 2018

Scientists have long thought oxygen appeared in Earth’s lower atmosphere 2.7 billion years ago, making life as we…
Billion-year-old lake deposit yields clues to Earth’s ancient biosphere

July 19, 2018

A sample of ancient oxygen, teased out of a 1.4 billion-year-old evaporative lake deposit in Ontario, provides fresh…
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