In his meticulous notes on the natural history of Concord, Massachusetts, Henry David Thoreau records the first open flowers of highbush blueberry on May 11, 1853. If he were to look for the first blueberry flowers in Concord today, mid-May would be too late. In the 160 years since Thoreau's writings, warming temperatures have pushed blueberry flowering three weeks earlier, and in 2012, following a winter and spring of record-breaking warmth, blueberries began flowering on April 1-six weeks earlier than in Thoreau's time. The climate around Thoreau's beloved Walden Pond is changing, with visible ecological consequences. In Walden Warming, Richard B. Primack uses Thoreau and Walden, icons of the conservation movement, to track the effects of a warming climate on Concord's plants and animals. Under the attentive eyes of Primack, the notes that Thoreau made years ago are transformed from charming observations into scientific data sets. Primack finds that many wildflower species that Thoreau observed-including familiar groups such as irises, asters, and lilies-have declined in abundance or have disappeared from Concord. Primack also describes how warming temperatures have altered other aspects of Thoreau's Concord, from the dates when ice departs from Walden Pond in late winter, to the arrival of birds in the spring, to the populations of fish, salamanders, and butterflies that live in the woodlands, river meadows, and ponds. Primack demonstrates that climate change is already here, and it is affecting not just Walden Pond but many other places in Concord and the surrounding region. Although we need to continue pressuring our political leaders to take action, Primack urges us each to heed the advice Thoreau offers in Walden: to "live simply and wisely." In the process, we can each minimize our own contributions to our warming climate.

Stretching across southern Mexico, northern Guatemala, and Belize, the Maya Forest, or Selva Maya, constitutes one of the last large blocks of tropical forest remaining in North and Central America. Home to Mayan-speaking people for more than 5,000 years, the region is also uncommonly rich in cultural and archaeological resources.Timber, Tourists, and Temples brings together the leading biologists, social scientists, and conservationists working in the region to present in a single volume information on the intricate social and political issues, and the complex scientifc and management problems to be resolved there. Following an introductory chapter that presents GIS and remote sensing data, the book: considers perspectives on managing forest resources and the forestry and conservation policies of each nation examines efforts by communities to manage their forest resources explains the connections between resource conservation and use by local people highlights research projects that integrate baseline biological research with impact assessments explains the need to involve local people in conservation effortTimber, Tourists, and Temples explores methods of supporting the biological foundation of the Maya Forest and keeping alive that unique and diverse ecosystem. While many areas face similar development pressures, few have been studied as much or for as long as the Maya Forest. The wealth of information included in this pathbreaking work will be valuable not only for researchers involved with the Maya Forest but for anyone concerned with the protection, use, and management of tropical forest ecosystems throughout the world.

In the acclaimed Walden Warming, Richard B Primack uses Henry David Thoreau and Walden, icons of the conservation movement, to track the effects of a warming climate on Concord, Massachusetts' plants and animals. Under the attentive eyes of Primack, the meticulous natural history notes that Thoreau made years ago are transformed from charming observations into scientific data sets. Primack finds that many wildflower species that Thoreau observed - including familiar groups such as irises, asters, and lilies - have declined in abundance or have disappeared from Concord. Primack also describes how warming temperatures have altered other aspects of Thoreau's Concord, from the dates when ice departs from Walden Pond in late winter, to the arrival of birds in the spring, to the populations of fish, salamanders, and butterflies that live in the woodlands, river meadows, and ponds. Climate change, Primack demonstrates, is already here, and it is affecting not just Walden Pond but many other places in Concord and the surrounding region. Although we need to continue pressuring our political leaders to take action, Primack urges us each to heed the advice Thoreau offers in Walden: to "live simply and wisely." In the process, we can each minimize our own contributions to our warming climate.

Stretching across southern Mexico, northern Guatemala, and Belize, the Maya Forest, or Selva Maya, constitutes one of the last large blocks of tropical forest remaining in North and Central America. Home to Mayan-speaking people for more than 5,000 years, the region is also uncommonly rich in cultural and archaeological resources."Timber, Tourists, and Temples" brings together the leading biologists, social scientists, and conservationists working in the region to present in a single volume information on the intricate social and political issues, and the complex scientifc and management problems to be resolved there. Following an introductory chapter that presents GIS and remote sensing data, the book: considers perspectives on managing forest resources and the forestry and conservation policies of each nation examines efforts by communities to manage their forest resources explains the connections between resource conservation and use by local people highlights research projects that integrate baseline biological research with impact assessments explains the need to involve local people in conservation effort"Timber, Tourists, and Temples" explores methods of supporting the biological foundation of the Maya Forest and keeping alive that unique and diverse ecosystem. While many areas face similar development pressures, few have been studied as much or for as long as the Maya Forest. The wealth of information included in this pathbreaking work will be valuable not only for researchers involved with the Maya Forest but for anyone concerned with the protection, use, and management of tropical forest ecosystems throughout the world.