We examine how different sources and types of information affect the knowledge of landowners confronting a controversial emergent technology, high-volume hydraulic fracturing (HVHF). HVHF may substantially affect the environmental, health, and economic and social realities faced by communities where drilling occurs. Yet how landowners in these areas learn about HVHF is largely unknown. Understanding landowner knowledge is important because HVHF development depends on voluntary choices of landowners, less knowledgeable landowners may be vulnerable to industry malfeasance, and support for HVHF is linked to familiarity with the industry. Using an original survey of Eastern Ohio landowners affected by HVHF, we find that they most frequently get information about HVHF from the news, oil/gas companies, social connections, and the internet. Information sourcing varies with demographics, socioeconomics, and political partisanship. Although landowners are exposed to many sources of information, most do not help them feel more informed about HVHF. Self-perceived familiarity with HVHF varies positively with the number of sources consulted, internet research, and receipt of information from the oil/gas industry and industry advocacy groups. Landowners often receive unsolicited information about HVHF, but this information rarely helps them feel more informed.