Garret Hardin

https://en.wikipedia.org/wiki/Garrett_Hardin

I wont highlight the salient aspects of Hardin's politics, you can read for yourself. However his association with Ehrlich is old news.

In 1993, Garrett Hardin published Living Within Limits: Ecology, Economics, and Population Taboos, which he described at the time as a summation of all his previous works. The book won the 1993 Phi Beta Kappa Award in Science. In the book, he argues that the natural sciences are grounded in the concept of limits (such as the speed of light), while social sciences, such as economics, are grounded in concepts that have no limits (such as the widespread "infinite-Earth" economic models). He notes that most of the more notable scientific (as opposed to political) debates concerning ecological economics are between natural scientists, such as Paul R. Ehrlich, and economists, such as Julian Simon, one of Ehrlich's most well known and vocal detractors. A strong theme throughout the book is that economics, as a discipline, can be as much about mythology and ideology as it is about real science.