Comment by adrian_b
Both titles are very misleading, because neither "oxygen is produced from Martian soil" nor "Martian dust is turned into oxygen".
As I have said, the oxygen comes only from water, which is missing on Mars, unlike the abundant Martian soil or Martian dust.
So the "microbe" does not solve the problem of oxygen production, which is obtaining water. With water, making oxygen by electrolysis is trivial and a problem solved long ago.
The cyanobacterium can make various useful organic substances, like proteins and vitamins. The fact that it also makes some oxygen is a minor additional advantage.
Even if such cyanobacteria will be grown on Mars, most of the oxygen will be made by electrolysis anyway, because the efficiency from solar light to free oxygen is much better and the photovoltaic cells continue to function in a much wider range of temperatures.
> As I have said, the oxygen comes only from water, which is missing on Mars
The title nor the article itself doesn't claim otherwise, unless I'm missing something?
It's also not claiming that the microbe somehow solve the problem of obtaining water, or anything else.
The only thing they claim is that this specific microbe, under the right circumstances, can produce oxygen while it grows in Martian-like soil. That's what the article claims, and the titles.