"Surprising Facts and Frustrating Misunderstandings Revealed by Online Community"

A Reddit post asking people to share little-known facts resulted in a list of interesting curiosities from around the world. Some of the facts include: dolphins can be trained for military aquatic guard duty, grass only evolved once dinosaurs were practically extinct, and the spotted salamander is the only vertebrate that photosynthesizes. Other facts cover topics such as history, science, and animals.