http://www.newsweek.com/perseverance-moxie-experiment-oxygen-mars-1575768

NASA is planning to create oxygen out of Mars' carbon dioxide-rich atmosphere using technology attached to the Perseverance rover.

The Mars Oxygen In-Situ Resource Utilization Experiment—also known as MOXIE—won't make Mars habitable, but it will aim to prove how future Mars explorers might produce oxygen for breathing.