PROF. EDOUARD BARD Faculté des Sciences de Saint Jéô Université dé Aix-Marseille III Case 431 13397 Marseille cedex 20 France tel: +33-9-128-80-37 fax: +33-91-98-92-60 email: ebard@cerege.fr DR. L. BENGTSSON Max Plank Institut fü Meteorologie Bundestrasse 55 D-2000 Hamburg 13 Germany tel: +49-40-411-73-349 fax: +49-40-411-73-366 email: bengtsson@dkrz.d400.de PROF. ANDRÉ BERGER Institut d' Astronomie et de Gé G. Lemaî Chemin du Cyclotron 2 B-1348 Louvain-La-Neuve Belgium tel: +32-10-473-303 fax: +32-10-474-722 email: berger@astr.ucl.ac.be DR. EDWARD BOYLE Department of Earth and Planetary Sciences Massachusetts Institute of Technology MIT E34-258 Cambridge, MA 02139 USA tel: +1-617-253-3388 fax: +1-617-253-8630 email: eaboyle@MIT.EDU DR. RAYMOND BRADLEY Department of Geology and Geography Morrill Science Center University of Massachusetts Amherst, MA 01003 USA tel: +1-413-545-2794 fax: +1-413-545-1200 email: rbradley@climate1.geo.umass.edu DR. KEITH BRIFFA School of Environmental Sciences University of East Anglia Norwich NR4 7TJ United Kingdom tel: +44-603-56-161 fax: +44-603-507-784 email: K.BRIFFA@UEA.AC.UK DR. WALLACE BROECKER Lamont-Doherty Earth Observatory Columbia University Route 9W Palisades, NY 10964 USA tel: +1-914-365-8413 fax: +1-914-365-8115 email: broecker@lamont.idgo.columbia.edu	DR. MARK CANE Lamont-Doherty Earth Observatory Columbia University Route 9W Palisades, NY 10964 USA tel: +1-914-365-8344 fax: +1-914-365-8736 email: mcane@lamont.idgo.columbia.edu DR. JULIA COLE Institute of Arctic and Alpine Research (INSTAAR) University of Colorado Campus Box 450 Boulder, CO 80309 USA tel: +1-303-492-0595 fax: +1-303-492-6388 email: coleje@spot.colorado.edu DR. EDWARD COOK Lamont-Doherty Earth Observatory Columbia University Palisades, NY 10964 USA tel: +1-914-365-8618 fax: +1-914-359-2931 email: drdendro@lamont.idgo. columbia.edu DR. ELLEN DRUFFEL Earth System Science Physical Sciences Research Facility University of California Irvine, CA 92717-3100 USA tel: +1-714-824-2116 fax: +1-714-824-3256 email: edruffel@uci.edu DR. ROBERT DUNBAR Dept. of Geology and Geophysics Rice University MS - 126 6100 South Main Street Houston, TX 77005-1892 USA tel: +1-713-527-4883 fax: +1-713-285-5214 email: dunbar@rice.edu DR. JEAN-CLAUDE DUPLESSY Centre des Faibles Radioactivité Laboratoire mixte CNRS-CEA Parc du CNRS, Av de la Terrasse F-91198 Gif sur Yvette cedex France tel: +33-1-69-82-35-26 fax: +33-1 69 -82-35-68 e-mail: Jean-Claude.Duplessy@cfr. cnrs-gif.fr PROF. ROBERTO FRASSETTO Global Change Division Instituto di Grandi Masse, CNR 1364 San Polo I-30125 Venezia Italy tel: +39-41-521-6828 fax: +39-41-260-2340 or +39-521- 4892 email: frasse@ocean.isdgm.ve.cnr.it	DR. PIETER GROOTES Leibniz Labor, c/o Institü fü Kernphysik Christian Albrechts University Leibniz Str. 19 D-24118 Kiel GERMANY tel: +49-431-880-3894 fax: +49-431-880-3356 email: pke26@rz.uni-kiel. d400.de DR. MALCOLM HUGHES Laboratory of Tree-Ring Research University of Arizona 105 W. Stadium, Building #58 Tucson, AZ 85721 USA tel: +1-520-621-6470 fax: +1-520-621-8229 email: mhughes@kati.ltrr. arizona.edu PROF. EYSTEIN JANSEN Department of Geology University of Bergen Allegaten 41 N-5007 Bergen Norway tel: +47-55-213-491 fax:+47-55-324-416 e-mail: jansen@geol.uib.no DR. SIGFUS JOHNSEN Science Institute University of Iceland 107 Reykjavik Iceland tel: +354-1-694-790, 694-785 or 694-800 fax: +354-1-289-11 e-mail: sigfus@raunvis.hi.is DR. SYLVIE JOUSSAUME Laboratoire de Modè du Climat et de l'Environnement CNRS/C.E. Saclay Bat. 709, Orme des Merisiers F-91191 Gif sur Yvette Cedex France tel: +331-69-08-56-74 fax: +331-69-08-77-16 email: syljous@asterix.saclay.cea.fr