Science has known since the 1950s that dinosaurs also lived in the Arctic. But it was long thought that the animals would move south in the winter and return in the summer – as are many migratory birds today. But the discovery of fossil juveniles now suggests that at least some species spent entire years in polar latitudes giving birth and raising their offspring there. A group around Patrick Druckermiller of the University of Alaska Museum of the North reports in “Current Biology.”.
