http://archives.seattletimes.nwsource.com/cgi-bin/texis.cgi/web/vortex/display?slug=warming27&date=20070427&query=ancient+global+warming


Tb está aquí:
Science  magazine, 27 April 2007
Vol. 316. no. 5824, pp. 587 - 589
DOI: 10.1126/science.1135274
Entitled: Paleocene-Eocene Thermal Maximum and the Opening of the Northeast Atlantic
http://www.sciencemag.org/cgi/content/short/316/5824/587