A team of academics from East Central University in Ada, Oklahoma, was commissioned to look into the option of nitrogen hypoxia, the has reported.

Source: https://www.theguardian.com/world/2023/sep/02/alabama-execution-nitrogen-kenneth-smith

In February, the state’s prison commissioner said that the department of corrections “should be” finished developing a nitrogen hypoxia protocol by the end of 2023.

Source: https://www.propublica.org/article/pharmacist-helps-clear-the-way-lethal-injection-protocol

Put another way, a bit more than 3% of the Bay suffered from severe hypoxia, on average, last summer.

Source: https://augustafreepress.com/news/karl-blankenship-chesapeake-bay-dead-zone-shrinks-to-smallest-on-record/

The group also underwent 'typical astronaut training' which included water survival training, hypoxia training - 'where they took away our oxygen' - and G-force training.

Source: https://www.dailymail.co.uk/femail/article-12409867/Hayley-Arceneaux-cancer-SpaceX-message-hope.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

“These fish deaths are related to low oxygen levels in the water (hypoxia) as flood waters recede,” the state government said in a statement.

Source: https://www.aljazeera.com/news/2023/3/18/millions-of-dead-fish-clog-australian-river

WhenATP electron production is poor; cell and fluid voltages fall, acidic hypoxia ensues, cell damage occurs and anaerobic survival pathways kick in. Acidity or pH below 7, further refuses oxygen and a downward spiral into disease and cancer results.

Source: https://www.lewrockwell.com/2023/07/capt-randall/intervention-vs-prevention/

"You’re under water for long periods of time so there are risks of hypoxia and if you’re going too deep down you can get lung squeeze and ear squeeze.

Source: https://www.dailystar.co.uk/real-life/im-professional-mermaid--its-30821523