Honorary Chair Sir Edmund Hillary 1919-2008	President Daniel A. Bennett	Honorary President Don Walsh, Ph.D.

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EXPEDITIONS Grant Reports   REPORT—YOUTH ACTIVITY FUND Solving the Cool Tropical Paradox: Paleotemperature and Paleoprecipitation Estimates Using Leaf Megafossils of a Tropical Paleocene Site in Northern Colombia 2004 By Fabiany Herrera Expedition Members: Fabiany Herrera Introduction During the last two decades the scientific community have been intrigued to know the role of the tropics on global climate during past greenhouse events. However, the lack of empirical data from low latitudes and the discrepancies between those data have impeded to quantify the causes that generated past greenhouse states. One of the most extreme global warming took place 60 million years ago during the early Paleogene. That event was characterized by ice-free poles, polar coastal water temperatures oscillating between 10–15°C, deep ocean temperatures approaching 8–12°C, and warm temperatures at high latitudes and mid-latitude continental interiors FULL REPORT in pdf RETURN TO LIST

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