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 11 December 1998:
Vol. 282. no. 5396, pp. 1965 - 1966
DOI: 10.1126/science.282.5396.1965a
Prev | Table of Contents | Next

News of the Week

PLANETARY IMPACTS:
Argentina, and Perhaps Its Life, Took a Hit

Richard A. Kerr

The 10-kilometer-wide asteroid that wiped out the dinosaurs and many other species 65 million years ago was just one of a steady stream of debris of all sizes that has splattered the planet, with effects on climate and extinctions varying from negligible to profound. On page 2061, researchers suggest that a lesser impact showered coastal Argentina with blobs of molten glass 3.3 million years ago, perhaps cooling climate and driving some of the region's mammals to extinction. But other researchers say that although the impact looks real, its connection to climate change or extinctions is doubtful.

Read the Full Text

ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products