Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 25 June 1999:
Vol. 284. no. 5423, pp. 2112 - 2113
DOI: 10.1126/science.284.5423.2112
Prev | Table of Contents | Next

News

EVOLUTION:
Going Beyond Appearances to Find Life's History

Gretchen Vogel

With an array of high-tech instruments and an influx of funding from NASA--which seeks new ways to track possible life-forms on other worlds--researchers are starting to read the faint chemical signatures of life left behind in fossils billions of years ago as organisms took in nutrients and built cellular structures. Isotopic and chemical methods are uncovering billion-year-old traces of cellular and even molecular structure, even in rocks where no visible fossils remain.

Read the Full Text

ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)