Janusz J. Petkowski3 articles listing Janusz J. Petkowski in PNAS, indexed by Paperzzz from Crossref and OSF.Peptides adopt stable omega-loop structures in concentrated sulfuric acid PNASProspects for detecting signs of life on exoplanets in the JWST era PNASWarm, water-depleted rocky exoplanets with surface ionic liquids: A proposed class for planetary habitability PNAS