When the relatively thin layer of the Earth's crust is disturbed, earthquakes remind us that our planet is continually restless. If the molten interior that is our planet's heart of fire breaks through, volcanoes show that they can be one of the most devastating of nature's powers. Watch as Mount St. Helens explodes after an earthquake. See what happens when a jumbo jet unwittingly flies into a cloud of volcanic dust. Travel across the Galapagos Islands to appreciate how volcanoes are creators of new land, and how that provides opportunities for nature to take hold. Travel to the ocean abyss to discover what life forms thrive around super heated vents.
