This unique atlas contains 248 charts of more than 300 of the brightest galaxies, each specially prepared to facilitate the discovery of supernovae. The comparison of these charts with the field seen in a telescope enables any extragalactic supernova to be spotted immediately. The charts include 345 galaxies printed on translucent paper for use on a light-box, each one carrying an explanation of the constellation in which the galaxy lies, special characteristics of the galaxy, observing instructions, expected maximum brightness for the supernovae in each galaxy, and the reference for the sequence. A handbook accompanies the charts advising on their use, on how to make and record supernova discoveries, and reviewing the present understanding of supernovae. Published for an international market, these charts carry real potential for numerous discoveries of supernovae. Supernova Search Charts are is a must for both serious observers and the growing number of deep sky enthusiasts around the world.
"Understanding the Earth System" aims to contribute to the timely discussion on Global Change of the Earth system. The discussion centers around the synthesis of procedures effecting both the natural and social sciences. The concept of Earth System Analysis, although controversially discussed, will be the focus of future scientific programs related to Global Change. The main problems are overpopulation, water shortages and climate change.
... the study on Singapore presents an interesting approach to quench thirst of a
giant and land constraint metropolis. ... to be met in the next millennium will be
from urban populations in fast-growing megacities in the developing countries.
the politics and ethics of the solar age Hazel Henderson. Today our planetary
environment is threatened on a scale unprecedented in human history. We have
witnessed the extinction of various species and loss of genetic diversity, the ...
Disputes over water allocations are, second to climate change. We are called upon to resolve such controversies using principles of sustainable development, which integrates ecology, economics, ethics. Establishes a template for all types of resource allocation disputes, whether in Australia or overseas.
principles. of. sustainability. and. economics. Tor Hundloe We have already
pointed out that in 1987 the United Nations' four-year-long investigation of
environmental and development matters, the Brundtland Report, came to its
conclusions ...
Principles of Sustainable Agriculture in the Tropics
* "Comprehensively covers the problems associated with modern industrialized agriculture and offers a clear vision of a more sustainable alternative" -- Dr Howard Lee, University of London* Making agriculture sustainable is one of the most important issues facing the world todayAgriculture is in deep crisis. Millions of farmers worldwide have left the countryside to find work in the cities, and those that stay behind are often compelled to look for greener pastures in forested or less populated areas. The effects of clearing land for agriculture and bad soil management can have devastating consequences for the land - soil erosion, desertfication often caused by overgrazing of livestock, nutrient leaching, salinization and acidity. The degradation of soil is one of the most important issues facing the world today. This book provides an overview of concepts and ideas in sustainable agriculture, covers the problems associated with modern agriculture, focusing primarily on soil and the biological mechanisms that need to be understood to manage the soil sustainably, and suggests practical ideas for improving the sustainability of farm systems.
This book provides an overview of concepts and ideas in sustainable agriculture, covers the problems associated with modern agriculture, focusing primarily on soil and the biological mechanisms that need to be understood to manage the soil ...
En la porción más baja del espectro de inversión se encuentran
predominantemente los países del Caribe, los cuales, en conjunto recibieron tan
sólo un 4.5% de la inversión. Sin embargo, cuando este mismo análisis es
controlado por el ...
