13. THE MOST VOLATILE AREA ON EARTH IS THE RING OF FIRE.
Located at the rim of the Pacific Basin, the so-called Ring of Fire is a nearly continuous chain of oceanic trenches and hundreds of volcanoes spanning some 25,000 miles that’s home to 75 percent of the world’s volcanic activity, with some 452 volcanoes (active and dormant), 90 percent of the world's earthquakes, and 22 of the 25 biggest volcanic eruptions in the last 11,700 years.
