Our Final Hour: A Scientist's Warning

Global Catastrophic Risks

Bomb Scare: The History and Future of Nuclear Weapons

Biological Weapons: From the Invention of State-Sponsored Programs to Contemporary Bioterrorism

Just Six Numbers: The Deep Forces That Shape The Universe

Before The Beginning: Our Universe And Others (Helix Books)

From Here to Infinity: A Vision for the Future of Science

Principles of Microeconomics, 7th Edition (Mankiw's Principles of Economics)

Alone Together: Why We Expect More from Technology and Less from Each Other

Our Cosmic Habitat

Our Final Century: The 50/50 Threat to Humanity's Survival