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Wednesday, September 24, 2025
TopicOxygen

Topic: Oxygen

How ancient volcanoes infused oxygen into the air we breathe

A University of Tokyo study suggests ancient eruptions enriched oceans with nutrients, causing brief oxygen spikes long before the Great Oxidation Event.

Scientists discover ‘dark oxygen’ produced on deep-ocean floor where the Sun don’t shine

Oxygen produced in the absence of sunlight is called ‘dark oxygen’. The discovery calls into question how life on Earth began. Also, dark oxygen can support seafloor ecosystems.

Where did the Earth’s oxygen come from? US Study points to an unexpected source

At least some of the Earth’s early oxygen came from a tectonic source via the movement and destruction of the Earth’s crust.

Where did Earth’s early life forms get oxygen? Scientists finally have some answers

Tectonic plate movement could have provided oxygen to some of world's earliest life forms, suggests study by scientists at Newcastle University, UK, published in Nature Communications.

Past Covid peak, here’s how govt plans to keep ‘white elephant’ PSA oxygen plants up & running

There are 3,756 PSA plants already commissioned across the country with a daily capacity of 18,000 metric tonnes (MT) of oxygen, but demand remains low at about 200 MT.

Ensure oxygen equipment are functional, Centre tells states as Covid cases surge

Health Secretary Rajesh Bhushan asked states to commission the PSA oxygen plants being set up from the states’ funds and CSR funds on a war-footing.

70% Indians overcharged for ambulances, 36% for oxygen during 2nd Covid wave, survey finds

Survey by LocalCircles reveals that half of those who overpaid for ambulances were charged five times the regular price.

Steroids or industrial oxygen? Jury is still out but black fungus no longer a problem

Modi govt believes black fungus was caused by steroid overuse but doctors say lack of sufficient oxygen hygiene may have been a factor too.

‘My crime was I fought for breath of 2 cr people’ — Kejriwal after report on Delhi’s O2 need

A sub-group constituted by the SC to audit oxygen consumption at the hospital in the national capital has said that Delhi govt 'exaggerated' consumption of the life-saving gas.

‘BJP showing false report’: Sisodia dismisses allegations of Delhi’s inflated oxygen need

Deputy CM Manish Sisodia said AAP govt spoke to members of SC-appointed committee who said they didn't sign or approve any report about Delhi's oxygen need during second Covid wave.

On Camera

Market regulator SEBI clears Adani Group of impropriety alleged by Hindenburg Research

SEBI probe concluded that purported loans and fund transfers were paid back in full and did not amount to deceptive market practices or unreported related party transactions.

China navy achieves breakthrough with new fighter jet launch system. What are electromagnetic catapults

China’s most advanced aircraft carrier—Fujian—uses electromagnetic catapults, a core component of future aircraft carriers.

India doesn’t give walkovers to Pakistan in war. Here’s why it shouldn’t do it in cricket either

Many really smart people now share the position that playing cricket with Pakistan is politically, strategically and morally wrong. It is just a poor appreciation of competitive sport.