Tom Murphy

Tom Murphy is professor emeritus of Physics and Astronomy & Astrophysics at the University of California, San Diego, where he spent two decades studying astrophysics and leading a lunar laser-ranging experiment that tested General Relativity with one-millimeter range precision. Following his instincts to educate, Murphy is eager to get people thinking about the quantitatively convincing case that our pursuit of an ever-bigger scale of life faces gigantic challenges and carries significant risks, which he explores in his Do the Math blog and related writing.

Note from Tom: To learn more about my personal perspective and whether you should dismiss some of my views as alarmist, read my Chicken Little page.

Academic prison: We are all trapped within the modernity pen – and academica offers no escape

Inspired by author Daniel Quinn’s Ishmael, I compare modernity to a prison whose bars few inmates can even detect. Academia is its own sort of prison.

October 12, 2026

How the pursuit of science also serves modernity

Much of science is in the service of modernity, producing remarkable short-term advantages for humans generally at the expense of the rest of the community of life.

October 5, 2026

Safety in NIMBers: Why cities can’t save nature from destruction

Frequent exposure to roadkill prompts my wife to say that this is why we should all live in cities. Leave the hinterlands to wild creatures.

September 14, 2026

The case for smartphones as a contributor to falling birth rates

Among economic stress, affordability, and climate change dread, is smartphone use another factor in the downward trend in fertility rates?

August 26, 2026

A lawful anarchist: The case against law in an age of mass extinction

We’re taught that without rigid legal systems society would collapse into chaos. But for most of human history, people relied on communal norms, not codified law, while the rise of written rules, hierarchy, and possessions cleared the way for today’s sixth mass extinction.

June 18, 2026

Why can’t we agree about the future?

Why do people with access to the same facts arrive at radically different conclusions about the future? Physicist Tom Murphy reflects on an impasse with Dave Murphy over modernity, ecological limits and humanity’s place in the living world.

June 3, 2026

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