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- <text id=89TT1508>
- <title>
- June 05, 1989: Taking The Earth's Vital Signs
- </title>
- <history>
- TIME--The Weekly Newsmagazine--1989
- June 05, 1989 People Power:Beijing-Moscow
- </history>
- <article>
- <source>Time Magazine</source>
- <hdr>
- SPACE, Page 72
- Taking the Earth's Vital Signs
- </hdr><body>
- <p>NASA seeks to become a major force in the campaign to save the
- planet
- </p>
- <p> The dramatic photographs that appear in these pages were
- taken by astronauts aboard U.S. space shuttles. The pictures
- provide clear evidence that the earth is in grave danger as a
- result of human activity. Overpopulation, pollution and energy
- consumption have created such planet-wide problems as massive
- deforestation, ozone depletion and the global warming that is
- believed to be caused by the greenhouse effect. Yet these
- alarming trends, and how they interact with such natural
- phenomena as hurricanes and volcanoes, are still not fully
- understood by scientists.
- </p>
- <p> Major help in studying the earth's environment is expected
- to emerge from a project being planned by the National
- Aeronautics and Space Administration. Called Mission to Planet
- Earth, the program would consist of a series of satellite
- flights designed to monitor the earth with sensitive instruments
- that measure such vital signs as temperature, winds and
- atmospheric chemistry. These readings would add immensely to the
- knowledge gained from high-resolution photography alone. The
- object is to understand the planet's dynamics well enough to
- anticipate ecological disasters -- and find ways to forestall
- them. The project was suggested in 1987 by a study group led by
- Sally Ride, America's first woman in space.
- </p>
- <p> Mission to Planet Earth would go a long way toward
- answering critics who have insisted that the U.S. space program
- has for years had no clear mission. If NASA gets the go-ahead,
- the project, which would cost an estimated $20 billion over the
- next two decades, could begin by 1996 with the launching of the
- first of a pair of 15-ton unmanned space platforms called the
- earth-observing system (EOS). Designed to operate for at least
- 15 years, the satellites would give scientists their first
- comprehensive look at just how the world's environment changes
- over time. Detectors would monitor the shrinking of the tropical
- rain forests as well as of the polar ice caps (a possible
- consequence of global warming). One instrument would measure the
- stress of pollution on the leaves of trees, while another would
- monitor the health of small ponds. Data from all the detectors
- would be correlated in an unprecedented effort to understand the
- interactions of earth, sky and water.
- </p>
- <p> But President Bush has not yet endorsed the program, and
- funding is uncertain. While NASA has $24.2 million of EOS
- start-up money in its fiscal 1990 budget, the big push for
- Mission to Planet Earth will begin this fall, when the agency
- asks for $100 million more for 1991. That hardly seems too much
- for a long-term commitment to help save the planet.
- </p>
-
- </body></article>
- </text>
-
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