The intriguing theory of a land bridge periodically linking Siberia and Alaska during the coldest pulsations of the Ice Ages had been much debated since Jose de Acosta, a Spanish missionary working in Mexico and Peru, first proposed the idea of a connection between the continents in 1589. But proof of the land bridge - now named Beringia after eighteenth-century Danish explorer Vitus Bering - eluded scientists until an inquiring geologist named Dave Hopkins emerged from rural New England and set himself to the task of solving the mystery. Through the life story of Hopkins, The Last Giant of Beringia reveals the fascinating science detective story that at last confirmed the existence of the land bridge that served as the intercontinental migration route for such massive Ice Age beasts as woolly mammoths, steppe bison, giant stag-moose, dire wolves, short-faced bears, and saber-toothed cats - and for the first humans to enter the New World from Asia. After proving unambiguously that the land bridge existed, Hopkins went on to show that the Beringian landscape cannot have been the "polar desert" that many had claimed, but provided forage enough to sustain a diverse menagerie of Ice Age behemoths.

Chronicles the work of geologist Dave Hopkins, whose research solved the mystery of the existence of Beringia, the Bering Land Bridge.

The intriguing theory of a land bridge periodically linking Siberia and Alaska during the coldest pulsations of the Ice Ages had been much debated since Jose de Acosta, a Spanish missionary working in Mexico and Peru, first proposed the idea of a connection between the continents in 1589. But proof of the land bridge - now named Beringia after eighteenth-century Danish explorer Vitus Bering - eluded scientists until an inquiring geologist named Dave Hopkins emerged from rural New England and set himself to the task of solving the mystery. Through the life story of Hopkins, The Last Giant of Beringia reveals the fascinating science detective story that at last confirmed the existence of the land bridge that served as the intercontinental migration route for such massive Ice Age beasts as woolly mammoths, steppe bison, giant stag-moose, dire wolves, short-faced bears, and saber-toothed cats - and for the first humans to enter the New World from Asia. After proving unambiguously that the land bridge existed, Hopkins went on to show that the Beringian landscape cannot have been the "polar desert" that many had claimed, but provided forage enough to sustain a diverse menagerie of Ice Age behemoths.

In 1958, Edward Teller, father of the H-bomb, unveiled his plan to detonate six nuclear bombs off the Alaskan coast to create a new harbor. However, the plan was blocked by a handful of Eskimos and biologists who succeeded in preventing massive nuclear devastation potentially far greater than that of the Chernobyl blast. The Firecracker Boys is a story of the U.S. government's arrogance and deception, and the brave people who fought against it-launching America's environmental movement. As one of Alaska's most prominent authors, Dan O'Neill brings to these pages his love of Alaska's landscape, his skill as a nature and science writer, and his determination to expose one of the most shocking chapters of the Nuclear Age.

Data of geology, oceanography, paleontology, plant geography, and anthropology focus on problems and lessons of Beringia. Includes papers presented at Symposium held at VII Congress of International Association for Quaternary Research, Boulder, Colorado, 1965.

Reveals the profound influence of the Denisovans and their hybrid descendants upon the flowering of human civilization around the world • Traces the migrations of the sophisticated Denisovans and their interbreeding with Neanderthals and early human populations more than 40,000 years ago • Shows how Denisovan hybrids became the elite of ancient societies, including the Adena mound-building culture • Explores the Denisovans’ extraordinary advances, including precision-machined stone tools and jewelry, tailored clothing, and celestially-aligned architecture Ice-age cave artists, the builders at Göbekli Tepe, and the mound-builders of North America all share a common ancestry in the Solutreans, Neanderthal-human hybrids of immense sophistication, who dominated southwest Europe before reaching North America 20,000 years ago. Yet, even before the Solutreans, the American continent was home to a powerful population of enormous stature, giants remembered in Native American legend as the Thunder People. New research shows they were hybrid descendants of an extinct human group known as the Denisovans, whose existence has now been confirmed from fossil remains found in a cave in the Altai region of Siberia. Tracing the migrations of the Denisovans and their interbreeding with Neanderthals and early human populations in Asia, Europe, Australia, and the Americas, Andrew Collins and Greg Little explore how the new mental capabilities of the Denisovan-Neanderthal and Denisovan-human hybrids greatly accelerated the flowering of human civilization over 40,000 years ago. They show how the Denisovans displayed sophisticated advances, including precision-machined stone tools and jewelry, tailored clothing, celestially-aligned architecture, and horse domestication. Examining evidence from ancient America, the authors reveal how Denisovan hybrids became the elite of the Adena mound-building culture, explaining the giant skeletons found in Native American burial mounds. The authors also explore how the Denisovans’ descendants were the creators of a cosmological death journey and viewed the Milky Way as the Path of Souls. Revealing the impact of the Denisovans upon every part of the world, the authors show that, without early man’s hybridization with Denisovans, Neanderthals, and other yet-to-be-discovered hominid populations, the modern world as we know it would not exist.

History, adventure, and science-the 18th century naturalist, Georg Steller, sailed to the north coast of North America and introduced its biological wonders to the world.