The field of planetary biology and chemical evolution draws together experts in astronomy, paleobiology, biochemistry, and space science who work together to understand the evolution of living systems. This field has made exciting discoveries that shed light on how organic compounds came together to form self-replicating molecules-the origin of life. This volume updates that progress and offers recommendations on research programs-including an ambitious effort centered on Mars-to advance the field over the next 10 to 15 years. The book presents a wide range of data and research results on these and other issues: The biogenic elements and their interaction in the interstellar clouds and in solar nebulae. Early planetary environments and the conditions that lead to the origin of life. The evolution of cellular and multicellular life. The search for life outside the solar system. This volume will become required reading for anyone involved in the search for life's beginnings-including exobiologists, geoscientists, planetary scientists, and U.S. space and science policymakers.

This new edition of the best-selling handbook gives a complete and concise description of the latest knowledge on nuclear and radiochemistry as well as their applications in the various fields of science. It is based on over 40 years experience in teaching courses and research. The book is aimed at all researchers seeking sound knowledge about the properties of matter, whether chemists, physicists, medical doctors, mineralogists or biologists. All of them will find this a valuable source of information. Research in radiochemistry includes: Study of radioactive matter in nature, investigation of radioactive transmutations, chemistry of radioelements etc. Applications include: Radionuclides in geo- and cosmochemistry, dating by nuclear methods, radioanalysis, Mossbauer spectroscopy and related methods, behavior of natural and man-made radionuclides in the environment, dosimetry and radiation protection. All the subjects are presented clearly and comprehensibly, and in a logical sequence, avoiding detailed derivations of equations. The relevant information is compiled in tables and the recent edition of the multi-colored Karlsruhe 'Chart of the Nuclides' has also been included. Clearly a standard work by an author with extensive experience in research and teaching.