Are we alone in the universe? The search for extraterrestrial intelligence (SETI) has been given fresh impetus in recent years following developments in space science which go beyond speculation. The evidence that many stars are accompanied by planets, the detection of organic material in the circumstellar disks of which planets are created, and claims regarding microfossils on Martian meteorites have all led to many new empirical searches. Against the background of these dramatic new developments in science,SETIcritically evalutes claims concerning the status of SETI as a genuine scientific research program and examines the attempts to establish contact with other intelligent life forms in the past thirty years. David Lamb also asseses competing theories on the origin of life on Earth, discoveries of ex-solar planets and proposals for space colonies as well as the technical and ethical issues bound up with them. Most importantly, he considers the benefits and drawbacks of communicationwith new life forms: how we should communicate and whether we should.
Litter Decomposition describes one of the most important processes in the biosphere - the decay of organic matter. It focuses on the decomposition process of foliar litter in the terrestrial systems of boreal and temperate forests due to the greater amount of data from those biomes. The availability of several long-term studies from these forest types allows a more in-depth approach to the later stages of decomposition and humus formation. Differences between the decay of woody matter and foliar litter is discussed in detail and a different pattern for decomposition is introduced.
The objective of this book is to develop a thinking approach to trace analysis by combining scattered information on techniques and materials used in trace analysis and by identifying the underlying principles behind the development of trace analysis procedures and their applications. Concentrates on inorganic trace analysis with an emphasis on the analysis of metals.
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