Slow, heavy steps rumble through the woods. The steps grow louder as a single, shockingly large animal lurches into view. Its body is almost bearlike. But it is much, much larger than any bear. With its blunt snout it looks more like a hugely overgrown hamster---a hamster the size of an elephant. The large beast moves slowly and strangely, swaying from side to side. Near a tall, broad-leafed tree it stops to eat. Lions prowl on the edge of the woods searching for food. They catch the scent of the beast, but they show no interest. No one cares to disturb it, not while it's eating---not at any other time, either. This is the Giant Ground Sloth! Book jacket.
The fascinating lives and puzzling demise of some of the largest animals on earth. Until a few thousand years ago, creatures that could have been from a sci-fi thriller—including gorilla-sized lemurs, 500-pound birds, and crocodiles that weighed a ton or more—roamed the earth. These great beasts, or “megafauna,” lived on every habitable continent and on many islands. With a handful of exceptions, all are now gone. What caused the disappearance of these prehistoric behemoths? No one event can be pinpointed as a specific cause, but several factors may have played a role. Paleomammalogist Ross D. E. MacPhee explores them all, examining the leading extinction theories, weighing the evidence, and presenting his own conclusions. He shows how theories of human overhunting and catastrophic climate change fail to account for critical features of these extinctions, and how new thinking is needed to elucidate these mysterious losses. Along the way, we learn how time is determined in earth history; how DNA is used to explain the genomics and phylogenetic history of megafauna—and how synthetic biology and genetic engineering may be able to reintroduce these giants of the past. Until then, gorgeous four-color illustrations by Peter Schouten re-create these megabeasts here in vivid detail.
An exciting Ice Age animal exploration led by popular adventurer Buddy Davis! Discover elk with antlers over 12 feet long, rhino-like animals that ate plants, “monster birds” that called North & South America home, and more! Learn about glaciers, land bridges, how much of the world was covered in ice! Read about how and why the Ice Age happened, and what the Bible reveals!
"Paul S. Martin's innovative ideas on late quaternary extinctions and wildlife restoration have fueled one of science's most stimulating recent debates. He expounds them vividly here, and defends them eloquently. A must-read."—David Rains Wallace, author of Beasts of Eden "This is a marvelous read, by a giant in American prehistory, about one of the greatest mysteries in the earth sciences."—Tim Flannery, author of The Eternal Frontier "Whether or not you agree with Paul Martin, he has shaped how we think about our Pleistocene ancestors and their role in transforming this planet."—Ross D. E. MacPhee, Curator of Mammalogy, American Museum of Natural History
A new vision is sweeping through ecological science: The dense web of dependencies that makes up an ecosystem has gained an added dimension-the dimension of time. Every field, forest, and park is full of living organisms adapted for relationships with creatures that are now extinct. In a vivid narrative, Connie Barlow shows how the idea of "missing partners" in nature evolved from isolated, curious examples into an idea that is transforming how ecologists understand the entire flora and fauna of the Americas. This fascinating book will enrich and deepen the experience of anyone who enjoys a stroll through the woods or even down an urban sidewalk. But this knowledge has a dark side too: Barlow's "ghost stories" teach us that the ripples of biodiversity loss around us now are just the leading edge of what may well become perilous cascades of extinction.
Featuring numerous illustrations, this book explores the many lessons to be learned from Pleistocene megafauna, including the role of humans in their extinction, their disappearance at the start of the Sixth Extinction, and what they might teach us about contemporary conservation crises. Long after the extinction of dinosaurs, when humans were still in the Stone Age, woolly rhinos, mammoths, mastodons, sabertooth cats, giant ground sloths, and many other spectacular large animals that are no longer with us roamed the Earth. These animals are regarded as “Pleistocene megafauna,” named for the geological era in which they lived—also known as the Ice Age. In Vanished Giants: The Lost World of the Ice Age, paleontologist Anthony J. Stuart explores the lives and environments of these animals, moving between six continents and several key islands. Stuart examines the animals themselves via what we’ve learned from fossil remains, and he describes the landscapes, climates, vegetation, ecological interactions, and other aspects of the animals’ existence. Illustrated throughout, Vanished Giants also offers a picture of the world as it was tens of thousands of years ago when these giants still existed. Unlike the case of the dinosaurs, there was no asteroid strike to blame for the end of their world. Instead, it appears that the giants of the Ice Age were driven to extinction by climate change, human activities—especially hunting—or both. Drawing on the latest evidence provided by radiocarbon dating, Stuart discusses these possibilities. The extinction of Ice Age megafauna can be seen as the beginning of the so-called Sixth Extinction, which is happening right now. This has important implications for understanding the likely fate of present-day animals in the face of contemporary climate change and vastly increasing human populations.
Reveals how Darwin's study of fossils shaped his scientific thinking and led to his development of the theory of evolution. Darwin's Fossils is an accessible account of Darwin's pioneering work on fossils, his adventures in South America, and his relationship with the scientific establishment. While Darwin's research on Galápagos finches is celebrated, his work on fossils is less well known. Yet he was the first to collect the remains of giant extinct South American mammals; he worked out how coral reefs and atolls formed; he excavated and explained marine fossils high in the Andes; and he discovered a fossil forest that now bears his name. All of this research was fundamental in leading Darwin to develop his revolutionary theory of evolution. This richly illustrated book brings Darwin's fossils, many of which survive in museums and institutions around the world, together for the first time. Including new photography of many of the fossils--which in recent years have enjoyed a surge of scientific interest--as well as superb line drawings produced in the nineteenth century and newly commissioned artists' reconstructions of the extinct animals as they are understood today, Darwin's Fossils reveals how Darwin's discoveries played a crucial role in the development of his groundbreaking ideas.
Things New and Strange chronicles a research quest undertaken by G. Wayne Clough, the first secretary of the Smithsonian Institution born in the South. Soon after retiring from the Smithsonian, Clough decided to see what the Smithsonian collections could tell him about South Georgia, where he had spent most of his childhood in the 1940s and 1950s. The investigations that followed, which began as something of a quixotic scavenger hunt, expanded as Clough discovered that the collections had many more objects and documents from South Georgia than he had imagined. These objects illustrate important aspects of southern culture and history and also inspire reflections about how South Georgia has changed over time. Clough’s discoveries—animal, plant, fossil, and rock specimens, along with cultural artifacts and works of art—not only serve as a springboard for reflections about the region and its history, they also bring Clough’s own memories of his boyhood in Douglas, Georgia, back to life. Clough interweaves memories of his own experiences, such as hair-raising escapes from poisonous snakes and selling boiled peanuts for a nickel a bag at the annual auction of the tobacco crop, with anecdotes from family lore, which launches an exploration of his forebears and their place in South Georgia history. In following his engaging and personal narrative, we learn how nonspecialists can use museum archives and how family, community, and natural history are intertwined.
