The Colorado River Basin's importance cannot be overstated. Its living river system supplies water to roughly forty million people, contains Grand Canyon National Park, Bears Ears National Monument, and wide swaths of other public lands, and encompasses ancestral homelands of twenty-nine Native American tribes. John Wesley Powell, a one-armed Civil War veteran, explorer, scientist, and adept federal administrator, articulated a vision for Euro-American colonization of the "Arid Region" that has indelibly shaped the basin-a pattern that looms large not only in western history, but also in contemporary environmental and social policy. One hundred and fifty years after Powell's epic 1869 Colorado River Exploring Expedition, this volume revisits Powell's vision, examining its historical character and its relative influence on the Colorado River Basin's cultural and physical landscape in modern times. In three parts, the volume unpacks Powell's ideas on water, public lands, and Native Americans-ideas at once innovative, complex, and contradictory. With an eye toward climate change and a host of related challenges facing the basin, the volume turns to the future, reflecting on how-if at all-Powell's legacy might inform our collective vision as we navigate a new "Great Unknown."

Silver Nautilus Book Award Winner "Best Book About the Environment" by Chicago Review of Books An ode to marine life and the natural world, these essays reveal the elusive lives of whales in the Pacific Ocean-home to orcas, humpbacks, blue, gray, and sperm whales Leigh Calvez has spent a dozen years researching, observing, and probing the lives of the giants of the deep. Here, she relates the stories of nature's most remarkable creatures, including the familial orcas in the waters of Washington State and British Columbia; the migratory humpbacks; the ancient, deep-diving blue whales, the largest animals on the planet. The lives of these whales are conveyed through the work of dedicated researchers who have spent decades tracking them along their secretive routes that extend for thousands of miles, gleaning their habits and sounds and distinguishing peculiarities. Calvez author invites the reader onto a small research catamaran maneuvering among 100-foot long blue whales off the coast of California; or to join the task of monitoring patterns of humpback whale movements at the ocean surface: tail throw, flipper slap, fluke up, or blow. To experience whales is breathtaking. To understand their lives deepens our connection with the natural world.

From swimming alongside our kayaks, canoes, coracles and boats to lurking alone in the shadowy waters of remote seas, seals have long interacted with humans and played a part in our history. Seal by Victoria Dickenson explores the natural and cultural history of an animal that has piqued and delighted human interest since ancient times, from their role in Roman spectacles to their frequent inhabitation of animal rescue centers today.Seals, sea lions, fur seals and walruses are so distinctive that biologists have classified them as members of a single order, the Pinnipedia, yet our relationship with each distinctive seal species varies. We have for centuries hunted some seals for their skin, oil and meat. In the twentieth- and twenty-first century the hunt has become a focus for global protest, and the white-furred baby seal has evolved into one of the most powerful symbols for animal welfare. Some species, like the Mediterranean monk seal, are among the most endangered mammals in the world. Others, who live far from human habitation, number in the millions.The seals living closer to our societies have become wrapped in our myths and legends: there are tales of seals who have sought out human society, following the sound of children's voices, or the music of the pipe and flute; and there are darker stories of selkies and other seal-like creatures that take on human shape for purposes of both good and ill. Richly illustrated and accessibly written, Seal offers an immersive view of a much-loved, storied creature.

The labor of turtle hunters and the shaping of Caribbean history. Illuminating the entangled histories of the people and commodities that circulated across the Atlantic, Sharika D. Crawford assesses the Caribbean as a waterscape where imperial and national governments vied to control the profitability of the sea. Crawford places the green and hawksbill sea turtles and the Caymanian turtlemen who hunted them at the center of this waterscape. The story of the humble turtle and its hunter, she argues, came to play a significant role in shaping the maritime boundaries of the modern Caribbean. Crawford describes the colonial Caribbean as an Atlantic commons where all could compete to control the region's diverse peoples, lands, and waters and exploit the region's raw materials. Focusing on the nineteenth and twentieth centuries, Crawford traces and connects the expansion and decline of turtle hunting to matters of race, labor, political and economic change, and the natural environment. Like the turtles they chased, the boundary-flouting laborers exposed the limits of states' sovereignty for a time but ultimately they lost their livelihoods, having played a significant role in legislation delimiting maritime boundaries. Still, former turtlemen have found their deep knowledge valued today in efforts to protect sea turtles and recover the region's ecological sustainability.