For thirty years David G. Campbell has explored the Amazon, an enchanting terrain of forest and river that is home to the greatest diversity of plants and animals to have ever existed, anywhere at any time, during the four-billion-year history of life on Earth.

With great artistic flair, Campbell describes a journey up the Rio Moa, a remote tributary of the Amazon River, 2,800 miles from its mouth. Here he joins three old friends: Arito, a caiman hunter turned paleontologist; Tarzan, a street urchin brought up in a bordello; and Pimentel, a master canoe pilot. They travel together deep into the rainforest and set up camp in order to survey every woody plant on a two-hectare plot of land with about as many tree species as in all of North America.

Campbell introduces us to two remarkable women, Dona Cabocla, a widow who raised six children on that lonely frontier, and Dona Ausira, a Nokini Native American who is the last speaker of her tribe's ages-old language. These pioneers live in a land whose original inhabitants were wiped out by centuries of disease, slavery, and genocide, taking their traditions and languages with them. He explores the intimate relationship between the extinction of native language and the extirpation of biological diversity. "It's hard for a people to love a place that is not defined in words and thus cannot be understood. And it's easy to give away something for which there are no words, something you never knew existed."

In elegant prose that enchants and entrances, Campbell has written an elegy for the Amazon forest and its peoples-for what has become a land of ghosts.

In The Mojave Desert, thirty-eight scientists who are all specialists in desert ecology address the threats to the Mojave, as well as the potential for natural recovery and active restoration. The contributing authors discuss the desert from several perspectives: regional threats such as expanding human populations, climate change, atmospheric nitrogen deposition, and invasive plants; the impact of roads in a desert ecosystem; soils and plant communities; shrinking aquifers; and the monitoring and sustainability of this fragile ecosystem. Finally, they discuss the importance of long-term data and the ways scientists and resource managers can interact to enhance understanding of the processes of change in the Mojave Desert and to advance the preservation and restoration of its precious resources.The Mojave Desert offers the fruits of extensive research in a number of disciplines and a sound assessment of the current state and possible future of one of the world's major deserts. As human intrusion and climate change increasingly threaten the Mojave's ecosystem, studies like this are essential in helping scientists, land managers, and the general public understand what is at risk and what can be done to preserve this austere and hauntingly beautiful region.