- Dec 2, 2003For life to begin from simple organic molecules, some preconditions for biochemistry are needed. Looking at some of the oldest rocks on our planet have posed a challenge that one has to dig deep to understand what the early Earth might have been like.
- Nov 2, 2003Climate models that incorporate the influence of marine life and sea shells can dramatically alter the course of evolution, according to researchers at the University of California. Their model shows that by buffering the oceans, calcium carbonates like limestone protect against wild climate extremes and
- Oct 12, 2003A British project will develop a technique to identify biomolecules in water that have been trapped in rocks for millions to billions of years. This technique will provide evidence for existence and nature of any life that was in samples when the water became sealed
- Apr 7, 2003It's a critical question of life science: Are microscopic structures found in 3.5 billion-year-old Archean rocks from Western Australia the oldest fossils of life on Earth? That depends, says one scientist, on whether you think the rocks formed from above -- or below.
- Mar 31, 2003Some of Earth's oldest rocks contain intriguing layered structures. Were living organisms responsible, or was it merely a random chemical process? The answer, says one researcher, may be a simple matter of compressing a computer file.
- Jan 6, 2003How the 3.5 billion year history of Earth gets written depends on proposed fossilized bacteria found in rocks from Western Australia. If life did exist that early then biological beginnings predated significant atmospheric oxygen by about a billion years. The debaters have just
- Dec 24, 2001The hills of Western Australia are home to zircons nearly four-and-a-half billion years old. The tiny crystals may change our understanding of the newly-formed Earth.