News of the WeekGeophysics

Opening the Door to a Chilly New Climate Regime

Science  21 Apr 2006:
Vol. 312, Issue 5772, pp. 350
DOI: 10.1126/science.312.5772.350a
Locked tight.

Analyses of fossil fish teeth (inset) show that Drake Passage began opening 41 million years ago.

CREDITS: (MAP) ADAPTED FROM H. D. SCHER; (PHOTO) H. D. SCHER