Climate shifts during the Dark Ages and medieval Warm Period 

Horizons highlights paleoscience topics of interest for the next generation, written in an easy to understand, visual format. It is a scientific review of why studying the past is important, mainly aimed at older high-school students and undergraduate students interested in environmental issues and global change. It promotes the use of comics, pictures, and drawings that support short papers with strong messages about past sciences and how to prepare for a changing future. This third issue deals with the theme on how studying past extreme wet and dry phases aids our understanding, and informs future action, on floods and droughts under the current global change.