Visualizing.org is a community site for sharing data visualizations (aka infographics). Anyone can upload their data visualizations to the public gallery. The public gallery is divided into four categories; economy, environment, health, and energy. Visualizations in the gallery can be downloaded, printed, and or embedded into your blog or website. Some of the visualizations in the gallery, such as this one embedded below, are interactive.
Visualizing.org could be a good place to find infographics to use at the start of a research activity. For example, take the infographic embedded above and ask students to research the causes of and impact of high obesity rates on communities.