- 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.