Since the launch of Sputnik in 1957, satellites have become the silent sentinels of our planet and the cosmos. In Sentinels in the Sky, geologist James Lawrence Powell tells the remarkable story of how satellites have revolutionized science—from tracking hurricanes and wildfires to discovering distant galaxies and mapping the afterglow of the Big Bang. With clarity and a storyteller's touch, Powell brings to life the science, people, and technology behind one of the most transformative innovations of the modern age. Click image to pre-order.
This gripping and remarkable synthesis documents the increase in fraudulent science, predatory journals, instant communication of misinformation, compromised peer review, and deliberate deception. Powell presents a powerful case that all scientists and societies based on truth need to wake up and face these escalating issues that threaten the credibility of science Itself. Every scientist and editor should read it. James Kennett, Member NAS
Finalist for the Prose Award of the Association of American Publishers. Shortlisted for the 2026 MIT Press Alumni Book Award.
Seven States in Jeopardy as Prolonged Drought Threatens Power Generation: A new report from the federal government brings urgency to a veteran geologist’s longtime warnings about the crippling of the Colorado River. Read here. 10/3/2021
In second printing by UC Press.

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