Contents of Vol. 3,
Number 1, 1997
by John A. Eddy
by John A. Eddy
by Scott K. Robinson
In the past thirty years many migratory songbirds seem to have disappeared
from woods and fields where once they were plentiful. Behind these changes
are a number of possible causes, but the leading suspects are probably the
changes we have made to sonbirds' summer breeding grounds in North America,
and the differences they now find when they arrive at their winter homes
in Central and South America.
[see also: summary]
by Anthony C. Janetos
The rich diversity of plants and animals that weaves the essential
tapestry for life on Earth is fast declining. Rates of extinction are ever
rising, and because of our own activities are at a minimum 50 to 100 times
greater today than the natural background rate. What is lost when the
number of species is diminished comes at great cost to national economies
and to our own health and quality of life.
[see also: summary]
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