Volcanoes around the world have their own legends, and many have wrought terrible devastation, but none has caught the imagination like Vesuvius. We now know that immense eruptions destroyed Bronze Age settlements around Vesuvius, but the Romans knew nothing of those disasters and were lulled into complacency—much as we are today—by its long period of inactivity. None of the nearly thirty eruptions since AD 79 has matched the infamous cataclysm that destroyed Pompeii and Herculaneum within hours. Nearly two thousand years later, the allure of the volcano remains—as evidenced by its popularity as a tourist attraction, from Shelley and the Romantics to modern-day visitors.

Vesuvius has loomed large throughout history, both feared and celebrated. Gillian Darley unveils the human responses to Vesuvius from a cast of characters as far-flung as Pliny the Younger and Andy Warhol, revealing shifts over time. This cultural and scientific meditation on a powerful natural wonder touches on pagan religious beliefs, vulcanology, and travel writing. Sifting through the ashes of Vesuvius, Darley exposes how changes in our relationship to the volcano mirror changes in our understanding of our cultural and natural environments.

With the Midwest under water, America had a chance to see how effectively it had “improved” its rivers. We’ve straightened and dredged them, revetted and rerouted them, made massive efforts to control them, yet our actions have been less than successful. Too often, physical changes made to a river conflict with natural processes, resulting in damage rather than alleviating it. Applying available knowledge on how rivers form and act could prevent such problems. Luna B. Leopold seeks to organize such knowledge. Widely regarded as the most creative scholar in the field of river morphology, Leopold presents a coherent description of the river, its shape, size, organization, and action, along with a consistent theory that explains much of the observed character of channels.

The laws of physics that govern rivers allow for variations, many of them dictated by random chance. Thus, a river’s adaptation, as Leopold describes it, tends toward the most probable form, the one with the least variance among hydraulic parameters. We see how this probabilistic tendency plays out as Leopold views the river as a whole from headwater to mouth, in the drainage net, in the behavior of meanders, and in aspects of sediment transport.

Grounded in hydraulics, geomorphology, and surveying, as well as in extensive fieldwork on rivers in the eastern and Rocky Mountain states, Leopold’s view of a river is at once technical and personal, providing both a firm foundation for understanding the behavior of rivers—including instructions for getting started in backyard hydrology—and a wealth of firsthand observations by a thoughtful and experienced scientist. It will be of immediate interest and great use as we seek to develop, preserve, and appreciate our most fluid natural resource.

For years, tourists have trekked across cracked rock at Hawaii’s Kilauea volcano to witness the awe-inspiring sight of creeping lava and its devastating effects on the landscape. In 2010, Eyjafjallajökull erupted in Iceland, stranding travelers as a cloud of ash covered western and northern Europe, causing the largest disruption of air travel since World War II. And just a few months later, Mount Merapi blew in Indonesia, killing over 350 people and displacing over 350,000 others, awakening people once more to the dangerous potential of these sleeping giants.