Bird-watching by the numbers
Article Abstract:
Bird-watchers may be able to determine the behavioral patterns of their favorite species by evaluating the traces birds leave on the ground. It may also help to identify the relative location of birds through the use of graphical representations or grids.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1998
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The economics of life and death
Article Abstract:
Economists can gain more information about the economic organization of society by studying indicators of well-being, such as mortality data, in addition to traditional economic indicators, such as income.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1993
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