Willard Wells, Ph.D. is author of Prospects for Human Survival, Second Edition and Apocalypse When?: Calculating How Long the Human Race Will Survive.

Willard’s predictive approach relies on simple and intuitive probability formulations that will appeal to readers with a modest knowledge of mathematics and statistics. His carefully erected theory should serve as the basis of many rational predictions of survival in the face of man-made hazards, mostly from high-tech such as genetic engineering and robotics. Compared to these, hazards that are entirely natural, such as asteroid hits, are practically negligible.