Michael Weisberg is the Bess W. Heyman President’s Distinguished Professor of Philosophy and Deputy Director of Perry World House. A climate diplomat, philosopher of science, climate policy researcher, and experienced academic leader, he has worked to negotiate and achieve collective outcomes in the complex landscape of climate, ocean, and development issues at the highest levels of international diplomacy.

I specialize in philosophy of science, philosophy of biology, and philosophy of race.  In philosophy of science, I primarily focus on metaphysical problems in science, such as what is an appropriate way to define "natural kinds."  In philosophy of biology, I primarily focus on metaphysical problems in biology, such as whether biological populations can have fuzzy temporal parts and whether there is any way to group organisms into biologically real subspecies.

I am Professor of Philosophy and Education at the University of Pennsylvania. My research focuses on early modern philosophy, including the history of philosophy of science, the history and philosophy of education, and women in the history of philosophy. I have published on a wide range of figures, including Astell, Cavendish, Conway, Descartes, Du Châtelet, Hobbes, Leibniz, Malebranche, and Wolff, covering topics in metaphysics, the natural sciences, ethics and political philosophy.