The term "post-truth" has experienced exponential growth, influenced by global political and social processes, as well as the characteristics of how individuals obtain, generate, and exchange information, increasingly linked to internet and digital social networks. This article analyzes the concept of post-truth, its use, and main theoretical problems, proposing the idea of "liquid information," inspired by Zygmunt Bauman's concept of "liquid modernity," as information not verified, supported, or confirmed, in contrast to "solid information," which is documented, reasoned, and verified. The analysis considers current sources for information and public opinion formation. Key concepts include post-truth, liquid information, digital social networks, internet, and public opinion. The article discusses how the use of information technologies has led to the rise of liquid information, where individuals consume information in a personalized, fragmented, and often unverified manner. It also highlights the role of social media in shaping public opinion and the challenges of verifying information in the digital age. The study emphasizes the need for interdisciplinary approaches to understand the phenomenon of post-truth and the importance of verifying information to counteract the spread of misinformation.The term "post-truth" has experienced exponential growth, influenced by global political and social processes, as well as the characteristics of how individuals obtain, generate, and exchange information, increasingly linked to internet and digital social networks. This article analyzes the concept of post-truth, its use, and main theoretical problems, proposing the idea of "liquid information," inspired by Zygmunt Bauman's concept of "liquid modernity," as information not verified, supported, or confirmed, in contrast to "solid information," which is documented, reasoned, and verified. The analysis considers current sources for information and public opinion formation. Key concepts include post-truth, liquid information, digital social networks, internet, and public opinion. The article discusses how the use of information technologies has led to the rise of liquid information, where individuals consume information in a personalized, fragmented, and often unverified manner. It also highlights the role of social media in shaping public opinion and the challenges of verifying information in the digital age. The study emphasizes the need for interdisciplinary approaches to understand the phenomenon of post-truth and the importance of verifying information to counteract the spread of misinformation.