Potential DMS-based biosignatures on K2-18b bolster the Hycean scenario, but life detection remains unclaimed

To the point

Led by Nikku Madhusudhan, a new JWST/MIRI study finds hints of dimethyl sulfide in K2-18b's atmosphere, an indication of possible life in its Hycean ocean world, but it is not a life detection and the finding is debated, with critics such as Chris Lintott urging caution.

Possible signs of alien life found on nearby exoplanet, study reports
space.com

Possible signs of alien life found on nearby exoplanet, study reports

Given everything we know about this planet, a Hycean world with an ocean that is teeming with life is the scenario that best fits the data we have.