Portrait Photograph of Jack Williams

John Williams


College of Letters & Science | Department of Geography and Center for Climatic Research

Hometown: San Francisco, CA

John (Jack) Williams is Professor in Geography and a former director of the Center for Climatic Research at UW-Madison. He studies climate change and ecosystem responses to changing climates, using the end of the last ice age as a model system for understanding the effects of large global rises in temperature. His work ranges from fieldwork and coring lakes to helping lead and build global-scale community databases. He has lived in Wisconsin since 2004 and has raised his family here; he enjoys kayaking, pickleball, running with his dog, and board-gaming. Dr. Williams is a Fellow of the Ecological Society of America and Kellett Fellow at UW-Madison. More information can be found at www.geography.wisc.edu/faculty/williams/lab/ or via Twitter @IceAgeEcologist


Ecological Responses to Climate Change: Lessons from the Past

How do species adapt to changing climates and how can we help them? Some of our best examples come from the end of the last ice age, when the world warmed by 5-10F. Here I’ll review how we study past climates and ecosystems, what we’ve learned, and insights for today. 

Wisconsin After the Last Ice Age: An Ecological History

Here I’ll review how we study past climates and ecosystems, what we’ve learned and insights for today.

Climate Science and Solutions: An Overview
No talk details available.
Life and Death of the Mammoths on St. Paul Island, Alaska
No talk details available.