But the Electron unit quickly overheated and automatically shut itself down, leaving the crew members without their main means of oxygen production.

Some companies produce high-efficiency systems for oxygen production from atmospheric air with the help of membrane technology.

And in the garden, their oxygen production is terrific.

And oxygen production is, after all, the most important trait of all.

The same processes could be used for oxygen production.

Rainforests are important because of their biological diversity, oxygen production, and vital role in world ecology.

"We've been measuring oxygen production in the deep silva."

"That's going to make a lot of things tough - including our oxygen production."

MIR was the first spacecraft to use recycled water for oxygen production.

The net oxygen production of a rainforest is, on average, zero.