home *** CD-ROM | disk | FTP | other *** search
- <text id=93TT1652>
- <title>
- May 10, 1993: News from the Ooze
- </title>
- <history>
- TIME--The Weekly Newsmagazine--1993
- May 10, 1993 Ascent of a Woman: Hillary Clinton
- </history>
- <article>
- <source>Time Magazine</source>
- <hdr>
- THE WEEK
- HEALTH & SCIENCE Page 27
- News from the Ooze
- </hdr>
- <body>
- <p> A fossil discovery suggests that life evolved with
- surprising rapidity
- </p>
- <p> How fast did life evolve on earth? A lot faster than we
- thought, according to an article in Science. Theorists generally
- assumed that it took at least 1.5 billion years for living
- things to emerge from the primordial soup. Now the discovery in
- Western Australia of a group of fossils containing 11 different
- types of microbes shows that life was already thriving and
- fairly diversified 3.5 billion years ago, a mere 400 million
- years after the earth became habitable. J. William Schopf, the
- UCLA paleobiologist who found the worm-shaped microfossils,
- thinks that the creatures may have already been producing oxygen
- by photosynthesis--a remarkable achievement in so short a
- time.
- </p>
- <p> At first glance, Schopf's discovery seems to support
- panspermia--the theory that life did not originate on earth
- but developed from spores that arrived, fully formed, from outer
- space. But it could also bolster complexity theory, which holds
- that once a chemical system becomes sufficiently complicated,
- self-reproducing organisms will emerge spontaneously and evolve
- with surprising rapidity.
- </p>
-
- </body>
- </article>
- </text>
-
-