If our planet is a sleeping giant, it slumbers fitfully. Slowly and insidiously, Earth's fabric is shifting, creaking and groaning.
Continents rub against continents.
Mountains creep higher. Under the oceans, volcanoes boil. We live on a patchwork of gigantic plates that jostle one another like the pieces of a rickety jigsaw puzzle. Beneath them rages fiery magma. The Earth's seismic activity can unleash almost inconceivable power.