The native population collapse in 16th century Mexico was a demographic catastrophe with one of the highest death rates in history. Recently developed tree-ring evidence has allowed the levels of precipitation to be reconstructed for north central Mexico, adding to the growing body of epidemiologic evidence and indicating that the 1545 and 1576 epidemics of cocoliztli (Nahuatl for "pest") were indigenous hemorrhagic fevers transmitted by rodent hosts and aggravated by extreme drought conditions.
According to the abstract, the purpose of this paper is to provide a quantitative research methodology for analyzing the costs of dealing with climate change.
According to the Executive Summary, the aims and objective of this report are to provide an assessment of national capacity and capability in 25 tropical countries for measuring and monitoring forest as a requirement for reporting on REDD under IPCC guidelines. This paper was commissioned by the United Kingdom Office of Climate Change as background work to its report 'Climate Change: Financing Global Forests' (the Eliasch Review).
Tunza is a UNEP magazine for and by young people. This issue is about environmental policies and practices that reduce one's carbon footprint, and protect threatened species.
This press release summarizes the findings of a new study. Saharan dust clouds travel thousands of miles and fertilize the water off the West Florida coast with iron, which kicks off blooms of toxic algae. The research was partially funded by a NASA grant as part of ECOHAB: Florida (Ecology and Oceanography of Harmful Algal Blooms), a multi-disciplinary research project designed to study harmful algae.
Magazine of the United Nations Environment Programme discussing worldwide environmental policies and other concerns. This issue is devoted to forestry, deforestation, and the sustainable use of forest products.
Magazine of the United Nations Environment Programme discussing worldwide environmental policies and other concerns. This issue is devoted to policies meant to reduce the carbon emissions from cars, trucks, and planes by converting fleets to cleaner, renewable fuels, and by moving government subsidies from highway infrastructure to public transportation.
This treaty between the United States and Mexico deals with hunting ducks and collecting duck eggs by indigenous people in North America. This treaty amends the Convention for the Protection of Migratory Birds in Canada and the United States.
This treaty sets out general legal obligations to protect the marine environment of the Gulf of Mexico, Straits of Florida, Caribbean Sea, and immediately adjacent areas of the Atlantic Ocean-collectively known as the Wider Caribbean Region.
Urbanization is a global phenomenon that has transformed and continues to alter landscapes and the ways in which societies function and develop. For this issue of UGEC Viewpoints, the editors collected case-studies presented at the Open Meeting that span across regions and themes: from Australia and the United States, as well as the less developed nations in Africa, megacities of Asia such as Dhaka, Bangladesh and Delhi, India, vulnerable coastal areas of the Yucatan Peninsula, and the largest rainforest in the world, the Brazilian Amazon. Currently, more than half of the world's population lives in cities; the United Nations projects that by 2030 the world will advance to the 60% urbanization threshold. Rapid urbanization effects will not only be present within the immediate locations (cities and their metropolitan areas), but will be experienced regionally and globally. The UGEC project seeks to better understand these implications and the complex dynamic systems of urban areas that affect and are affected by global environmental change (e.g., climate change, natural disasters, loss of biodiversity, freshwater ecosystem decline, desertification, and land degradation). Several commonalities are readily identifiable in the authors' research, some of which include an attention to the roles of the governance structures within cities; the functioning of ecosystem services, water, food, and sanitation service provision; as well as the role of research in assisting the successful development of sustainable urban plans and policies.
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