The Earth is a powerful, active, and ever-changing planet. Earthquakes and volcanoes reshape the Earth's crust with sudden bursts of movement or with eruptions that last decades. Powerful storms develop in the swirling atmosphere, creating cumulonimbus thunderclouds, lightning storms, and even tornadoes or hurricanes. Geological features and moist air conspire to cause floods in one region, and drought in another. Full of drama and majesty, these events remind us of the extraordinary power of our changing Earth. Thanks to the hard work of Earth scientists, we can forecast and prepare for natural hazards in order to minimize their effects on our daily lives. In celebration of the efforts of Earth scientists to help society understand the forces of nature that shape our planet.