Special
Report Earth in the balance
By RICH HEFFERN
What on earth are we doing to the Earth? asks journalist
Bill Moyers at the beginning of a two-hour program that premieres on PBS
Tuesday, June 19, from 8 to 10 p.m. ET (check local listings). Bill
Moyers Reports: Earth on Edge probes two of the most critical questions
of the new century: What is happening to Earths capacity to support the
human species and civilization? And, more important, what can we do about
it?
This is not a report on saving the pandas or even a
beautiful scenic view, says Moyers. Scientists are now asking
whether the Earth can continue to sustain human life. We are reporting on what
they are finding.
The program coincides with the launch of the Millennium Ecosystem
Assessment, an international scientific effort to gauge the health of the
worlds forests, grasslands and farmlands, as well as coastal and
freshwater resources. Preliminary findings were featured in the study World
Resources 2000-2001: People and Ecosystems, prepared by the World Resources
Institute, the World Bank and the United Nations Development and Environment
Programmes. Their statistics are sobering: half the worlds wetlands lost
in one century, half the worlds forests cut down, 70 percent of the major
marine fisheries depleted, and the worlds coral reefs at grave risk.
Anyone who follows the news knows that the environment is
under pressure, but what is the big picture? Scientists want the facts, and
they are starting to comb every room in the global household to see what we
have to do to go on living here, says Moyers.
Moyers begins on the prairies of Western Kansas then ranges to
South Africas Cape of Good Hope, to British Columbias rain forests,
to the grasslands of Mongolia, then to the coral reefs off the coast of Brazil.
The program looks at five ecosystems, describing the human impact on the
environment and whats necessary to restore it.
We are pushing our planet to the absolute limit of its
ability to function, says Melanie Stiassny, one of the biologists
interviewed whose findings suggest that the planet is approaching critical
environmental thresholds that may be irreversible. The program profiles
individuals who are confronting the challenge head on.
A Kansas farmer, Charlie Melander explains how he uses the richest
farmland in the world in ways that prevent its loss to erosion and pollution,
bucking the conventions of farming practice. Why should I, who live in
Manhattan, care about how you farm out here, as long as I get the food I
need? Moyers asks. The equations not that simple,
Melander answers, explaining that the cost of current farming practices is
polluted water even hundreds of miles out in the Gulf where Midwestern rivers
empty and the prospect of eroded fields unable to bear crops in the future.
Like it or not, youre going to be affected by what we do or
dont do, he warns.
In South Africa the problem is water scarcity. European colonists
planted non-native pine and eucalyptus that interfered with that
ecosystems million-year-old practice of filtering water through
drought-hardy bushes. Today forests of those trees drink up the water so
necessary to city dwellers downstream. The government decided to train 40,000
unemployed people to cut down the trees and restore the precious water flow
from the mountains to the rivers. Their Working for Water program
has been a huge success.
Peacefully and productively resolving the conflicts of competing
agendas is one of the great environmental challenges facing the world today. In
the rainforests of the Canadian northwest, Moyers tells the story of a
collaboration involving one of Canadas largest timber companies.
Environmental protesters halted the clear-cutting of old-growth cedar, hemlock
and fir and when the logging stopped, so did the jobs for Canadas native
peoples who live in the area. Working together, company executives, native
leaders and environmentalists formed a new company to harvest trees in ways
that mimic the natural process. They market the lumber with a certified Green
stamp of approval, and are waiting to see if the public is willing to pay the
extra money to keep these cathedral-like forests healthy.
In Mongolia, individual families compete for pasturelands. The
thinning grass no longer protects the topsoil, which blows away in the
persistent winds. As happened recently when a Mongolian dust storm blew
pollution from China all the way to the mainland United States, what happens in
Mongolia has implications elsewhere.
While Mongolia is barren, Brazil is lush, but it too faces the
same problem -- pressure of human demands on resources. Moyers journeys to the
coastal reefs at Tamandare, a magnet for tourists and a gold mine for fisher
folk. The beauty and bounty of these waters are at risk as a result of the
destruction of mangrove trees on rivers that empty into the Atlantic. The trees
were cut to make way for tourism development.
Marine biologist Carl Safina explains that sea life is threatened
the world over. I hear buzzers going off all around me, he says.
Eighty percent of the worlds fisheries are either at the very limit
of what they can produce without going into major long-term decline, or are
already in decline or depleted.
Moyers weaves these individual stories together into a compelling
picture of the present state of the planets health. We dont
like to react to the first warning light that comes on the dashboard,
Safina says. We like to make sure that were really hearing a big
grinding noise before we can all agree that we should stop, get out and look at
whats wrong.
The worlds ecosystems are literally our life support
systems. They feed and clothe us, recycle our wastes, provide us with jobs and
spiritual nourishment. We cant live without them, but Moyers report
shows the difficulties we have living with them as well.
Rich Heffern is an NCR staff writer. His e-mail address
is rheffern@natcath.org
National Catholic Reporter, June 15,
2001
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