In a time when an unquestionable link between anthropogenic emissions of greenhouse gases and climatic changes has finally been acknowledged and * widely documented through IPCC reports, the need for precise estimates of greenhouse gas (GHG) production rates and emissions from natural as well as managed ecosystems has risen to a critical level. Future agreements between nations concerning the reduction of their GHG emissions will - pend upon precise estimates of the present level of these emissions in both natural and managed terrestrial and aquatic environments. From this viewpoint, the present volume should prove to a benchmark contribution because it provides very carefully assessed values for GHG emissions or exchanges between critical climatic zones in aquatic en- ronments and the atmosphere. It also provides unique information on the biases of different measurement methods that may account for some of the contradictory results that have been published recently in the literature on this subject. Not only has a large array of current measurement methods been tested concurrently here, but a few new approaches have also been developed, notably laser measurements of atmospheric CO concentration 2 gradients. Another highly useful feature of this book is the addition of - nitoring and process studies as well as modeling.

In a time when an unquestionable link between anthropogenic emissions of greenhouse gases and climatic changes has finally been acknowledged and * widely documented through IPCC reports, the need for precise estimates of greenhouse gas (GHG) production rates and emissions from natural as well as managed ecosystems has risen to a critical level. Future agreements between nations concerning the reduction of their GHG emissions will - pend upon precise estimates of the present level of these emissions in both natural and managed terrestrial and aquatic environments. From this viewpoint, the present volume should prove to a benchmark contribution because it provides very carefully assessed values for GHG emissions or exchanges between critical climatic zones in aquatic en- ronments and the atmosphere. It also provides unique information on the biases of different measurement methods that may account for some of the contradictory results that have been published recently in the literature on this subject. Not only has a large array of current measurement methods been tested concurrently here, but a few new approaches have also been developed, notably laser measurements of atmospheric CO concentration 2 gradients. Another highly useful feature of this book is the addition of - nitoring and process studies as well as modeling.

Representing current and emerging methods and theory, this volume introduces new avenues for exploring how prehistoric and historic communities provided healthcare for their sick, injured, and disabled members. It adjusts and expands the bioarchaeology of care framework, a way of analyzing caregiving in the past designed for individual case studies of human skeletal remains, to detect and examine care at the population level. Covering a range of time from the Archaic period to the present, contributors discuss community settings including British hospitals and nursing homes, a shell burial mound site in Alabama, and the Mississippi State Asylum. These essays offer insights into the care given to children and those with reduced mobility, the social burden of healthcare, practices of euthanasia, and the relationship between care for the mentally ill and structural violence. A necessary extension to our understanding of the complexities of caregiving in the past, Bioarchaeology of Care through Population-Level Analyses shows that it is important to recognize the impact of disease or disability on both the individuals affected and their broader communities. Contributors demonstrate that flexibility in bioarchaeological modeling and methodology can result in robust and nuanced scholarship on caregiving in the past and the societies that provided that care.