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.

Science 8 December 2006:
Vol. 314. no. 5805, p. 1529
DOI: 10.1126/science.314.5805.1529
Prev | Table of Contents | Next

News of the Week

GEOCHEMISTRY:
A Shot of Oxygen to Unleash the Evolution of Animals

Richard A. Kerr

In two papers published this week, one of which appears online in Science (www.sciencemag.org/cgi/content/abstract/1135013), researchers present geochemical and isotopic evidence that substantial amounts of oxygen first reached the deep sea 580 million years ago, just 5 million years before macroscopic animals make their debut in the fossil record. (Read more.)

Read the Full Text

To Advertise     Find Products

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