The first has to do with the period’s cataclysmic close. In lots of people’s minds, the mystery of what killed the dinosaurs and other species — paving the way for the rise of mammals — was solved a ...

Learn about how volcanoes are formed and the ways they erupt Chiara Maria Petrone, Roberto Scandone, and Alex Whittaker On February 20, 1943, Dionisio Pulido and his family were working in their ...