https://www.cnet.com/news/nasa-curiosity-rover-finds-new-evidence-mars-is-not-a-dead-planet/

No, it's still not news of aliens on Mars. Instead, NASA has revealed that Curiosity, its youngest rover on the Red Planet, has found methane and other organic compounds that are the basic building blocks of life as we know it.

In two studies published Thursday in the journal Science, researchers from the US space agency, and from other institutions around the world, present data from Curiosity's instruments, which picked up seasonally fluctuating levels of methane in the Martian atmosphere, along with organic molecules in drilling samples.