![](http://blog.ucc.edu.ar/other-en/files/2019/11/87A7C9E3-27A5-43BC-B11A7DD7A86F8A25_source-150x150.jpg)
Fluctuating levels of the atmospheric gas, a potential tracer of alien life, have left researchers mystified
By Robin George Andrews on November 20, 2019
Link> https://www.scientificamerican.com/article/nasas-curiosity-rover-finds-unexplained-oxygen-on-mars/?utm_source=newsletter&utm_medium=email&utm_campaign=daily-digest&utm_content=link&utm_term=2019-11-20_featured-this-week&spMailingID=61386192&spUserID=MTU4MDg3OTA0MzIwS0&spJobID=1763190583&spReportId=MTc2...
More