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.
Invitrogen

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 21 January 2000:
Vol. 287. no. 5452, pp. 406 - 407
DOI: 10.1126/science.287.5452.406
Prev | Table of Contents | Next

News of the Week

GEOPHYSICS:
Did the Dinosaurs Live on a Topsy-Turvy Earth?

Richard A. Kerr

On page 455 of this issue of Science, two researchers report evidence that 84 million years ago the whole Earth rolled like a ball, turning 15° to 20° in a couple of million years. This "true polar wander," so called because the geographic poles could actually travel across the globe, would move land and sea 10 times faster than continental drift ever has. If it is real, it may be symptomatic of unusual turmoil within the deep interior of Earth.

Read the Full Text

ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products

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