The end of the Cretaceous Period, 66 million years ago, marked the dramatic extinction of the dinosaurs. Until now, our understanding of this mass extinction has been largely shaped by fossils from North America. However, a...
Authorities near Sicily's Mount Etna are bracing to control an influx of visitors this weekend, attracted by a two-week flow of lava inspiring high-altitude selfies and other reckless behavior.
The lava seeping from Sicily's most famous volcano,...
