It is actually using a hollow cylinder of acrylic as the fuel, with gaseous oxygen as an oxidizer. We’re already quite familiar with solid rocket propellant, but this hybrid approach is much ...

Oxygen is vital to many medical procedures. But a safe, affordable supply is severely lacking around the world, according to a new report. By Apoorva Mandavilli At the height of the Covid-19 ...

An article published this week in The Lancet medical journal found that more than half of the world’s population lacks access to safe and affordable medical oxygen services, and most people ...

Dissolved oxygen is a measure of the amount of gaseous oxygen (as O 2) dissolved in water. Oxygen enters the river water from the atmosphere (via diffusion), from groundwater, and also as a by-product ...