Anonymized microdata from a representative face-to-face survey of Lithuanian residents (N = 1005, aged 18+), conducted in June 2024 by Baltijos tyrimai. Topics: science engagement and interest, trust in science and institutions, attitudes toward science and technology, information consumption and sources, climate change engagement, perception of and behavior related to fake news, Big Five personality traits, social trust, and demographics (93 variables). Age and income variables are recoded into bands for anonymization; one open-ended item is excluded. The deposit includes the data file (CSV) and a full data dictionary (XLSX) with question wording and answer options in English. Collected within the project INFODEMIJA, funded by the Research Council of Lithuania (grant No. S-VIS-23-4), Mykolas Romeris University.