With our ideas of volcanoes we always associate the grand and the terrible ; and a volcanic eruption—a huge piece of artillery, with a mouth perhaps miles in circumference, shooting up rocks and ...

But here's a shocker: Mauna Kea in Hawaii takes the crown as the tallest volcano on Earth. Measuring over 10,200 meters from its base on the seafloor to its summit, it surpasses Mount Everest in ...

"It's this great natural laboratory," he said. "It's really active. So, you can test all these ideas about how volcanoes work, how eruptions are triggered, how magma gets to the surface during the ...