Add Yahoo as a preferred source to see more of our stories on Google. Image of active volcano shows magma pressure inside volcanoes can destabilize slopes and trigger collapse. (CREDIT: YouTube / CC ...

For decades, volcanologists believed that the primary trigger for explosive eruptions was a drop in pressure as magma rises toward the surface. When pressure falls, gases dissolved deep within the ...

Some 66 million years ago, the world was dominated by dinosaurs, and then suddenly, it wasn't. The scientific consensus is that a catastrophic asteroid impact ended the Cretaceous era when it wiped ...