What about those previously studied plumes of methane and meteorites potentially stuffed with the fossils of Martian microbes?

How excited should we be about the latest Mars potential biosignature discovery? 'It's arguably the best evidence we have so far'

Source: space
Source Link: https://www.space.com/space-exploration/search-for-life/how-excited-should-we-be-about-the-latest-mars-potential-biosignature-discovery-its-arguably-the-best-evidence-we-have-so-far