Wyniki wyszukiwania:

The human population of the world is increasing by about 1.5% each year. Not all agree that population growth on this scale consitutes a problem, but there is wide acceptance that the world's human population cannot go on growing indefinitely. Where do the limits lie, and how can they be determined? What are the problems caused by population growth and how can we safeguard the future of our planet? In this important new book, leading authorities examine the implications of rapid human population growth for global stability and security. Avoiding the hysteria and overstatement that so often...

Concern about future supplies of fresh water to society, to meet the full range of human needs, now comes very high on the priority list of global societal issues. An overarching issue, which this book addresses, is whether global climate change is a dominant driver of change in the structure and function of all natural water-based ecosystems, or whether direct human population growth and accelerated consumption are playing an equal or greater role. This book divides the whole aquatic realm into 21 ecosystems, from those on land (both saline and fresh water) to those of the open and deep...