Recent research on children's thinking about the future has taken multiple directions, many of which are illustrated in the contributions to this special issue. In this commentary the topic is discussed in the context of research on children's understanding of time, and some of the adaptive challenges of thinking about the future are considered. The studies in this issue show the emergence of some components of thinking about the future in early childhood. More research will be needed to illuminate abilities acquired at later ages and the representations and processes underlying humans' thinking about the future.