What do Virginia Woolf, the rotation of hurricanes, Babylonian kings and Einstein's General Theory Relativity all have in common? Eclipses. Always spectacular and, today, precisely predicable, eclipses have allowed us to know when the first Olympic games were played and, long before the first space probe, that the Moon was covered by dust. Eclipses have stunned, frightened, emboldened and mesmerized people for thousands of years. They were recorded on ancient turtle shells discovered in the Wastes of Yin in China, on clay tablets from Mesopotamia and on the Mayan "Dresden Codex." They are mentioned in Homer's Iliad and Odyssey and at least eight times in the Bible. Columbus used them to trick people, while Renaissance painter Taddeo Gaddi was blinded by one. Sorcery was banished within the Catholic Church after astrologers used an eclipse to predict a pope's death. In Mask of the Sun, acclaimed writer John Dvorak the importance of the number 177 and why the ancient Romans thought it was bad to have sexual intercourse during an eclipse (whereas other cultures thought it would be good luck). Even today, pregnant women in Mexico wear safety pins on their underwear during an eclipse. Eclipses are an amazing phenomena-unique to Earth-that have provided the key to much of what we now know and understand about the sun, our moon, gravity, and the workings of the universe. Both entertaining and authoritative, Mask of the Sun reveals the humanism behind the science of both lunar and solar eclipses. With insightful detail and vividly accessible prose, Dvorak provides explanations as to how and why eclipses occur-as well as insight into the forthcoming eclipse of 2017 that will be visible across North America.

The incredible story of the creation of a continent-our continent- from the acclaimed author of The Last Volcano and Mask of the Sun. "Exuberant. Dvorak is a wonderful storyteller [and] challenges the conventional wisdom. This will enrich your everyday personal experiences."-The Wall Street Journal The immense scale of geologic time is difficult to comprehend. Our lives-and the entirety of human history-are mere nanoseconds on this timescale. Yet we hugely influenced by the land we live on. From shales and fossil fuels, from lake beds to soil composition, from elevation to fault lines, what could be more relevant that the history of the ground beneath our feet? For most of modern history, geologists could say little more about why mountains grew than the obvious: there were forces acting inside the Earth that caused mountains to rise. But what were those forces? And why did they act in some places of the planet and not at others? When the theory of plate tectonics was proposed, our concept of how the Earth worked experienced a momentous shift. As the Andes continue to rise, the Atlantic Ocean steadily widens, and Honolulu creeps ever closer to Tokyo, this seemingly imperceptible creep of the Earth is revealed in the landscape all around us. But tectonics cannot-and do not-explain everything about the wonders of the North American landscape. What about the Black Hills? Or the walls of chalk that stand amongst the rolling hills of west Kansas? Or the fact that the states of Washington and Oregon are slowly rotating clockwise, and there a diamond mine in Arizona? It all points to the geologic secrets hidden inside the 2-billion-year-old-continental masses. A whopping ten times older than the rocky floors of the ocean, continents hold the clues to the long history of our planet. With a sprightly narrative that vividly brings this science to life, this revised edition of John Dvorak's monumental How the Mountains Grew will fill readers with a newfound appreciation for the wonders of the land we live on.

Volcanoes have fascinated-and terrified-people for ages. They have destroyed cities and ended civilizations. John Dvorak, the acclaimed author of Earthquake Storms, looks into the early scientific study of volcanoes and the life of the man who pioneered the field, Thomas Jaggar. Educated at Harvard, Jaggar went to the Caribbean after Mount Pelee exploded in 1902, killing more than 26,000 people. Witnessing the destruction and learning about the horrible deaths these people had suffered, Jaggar vowed to dedicate himself to a study of volcanoes. What followed was fifty years of global travel to eruptions in Italy, Alaska, Central America, Japan and the Pacific. In 1912, he built a small science station at the edge of a lake of molten lava at Kilauea volcano in the Hawaiian Islands, with the goal of solving the mystery of why volcanoes erupt and how they could be predicted. Jaggar found something else at Kilauea: true love. She was Isabel Maydwell, a widowed school teacher who came to Kilauea to restart her life. For more than twenty ears, she and Jaggar ran the science station, living in a small house at the edge of a high cliff that overlooked the lava lake. Maydwell would quickly becoming one of the world's most astute observers of volcanic activity. Mixed with tales of myths and rituals, as well as the author's own experiences and insight into volcanic activity, The Last Volcano reveals the lure and romance of confronting nature in its most magnificent form-the edge of a volcanic eruption.