Talk to A World Without Ice like its author wrote you back.
Get the ideas that fit your life — not generic summaries.
- Chat with the book
- Audiobook-style main ideas
- Adapts to your life and goals
- Helps you take action
What it argues
Henry Pollack is a geophysicist at the University of Michigan who spent decades studying the Earth's heat flow and was a contributing author to the Intergovernmental Panel on Climate Change. A World Without Ice is his account of what ice does for the planet, what happens when it disappears, and how we know both of those things with the confidence that science permits.
The book opens with a history of ice on Earth — the long glacial cycles, the great ice ages, the retreat that produced the landscapes most people now live in. Pollack explains how ice cores drilled from the Greenland and Antarctic ice sheets preserve a chemical record of past temperatures and atmospheric composition going back hundreds of thousands of years, and how that record provides the baseline against which current change is measured. The science here is patient and cumulative, building understanding from first principles rather than asserting conclusions.
What it gets right
- 1.
Ice cores from Greenland and Antarctica preserve a direct chemical record of past temperature and atmospheric composition going back 800,000 years, providing reliable baseline data for understanding current warming.
- 2.
The albedo effect — ice reflecting solar radiation rather than absorbing it — means that ice loss is self-reinforcing. Less ice means more absorption, which means more warming, which means less ice.
- 3.
Roughly two billion people depend on glaciers as seasonal freshwater storage. As glaciers retreat, the timing and volume of river flows changes in ways that existing agricultural and urban infrastructure is not designed for.
What it covers
Who wrote it
Henry Pollack is a geophysicist and professor emeritus at the University of Michigan, where he spent his career studying Earth's heat flow and climate history. He was a contributing author and reviewer for the Intergovernmental Panel on Climate Change, which shared the 2007 Nobel Peace Prize. His research has taken him to every continent, including more than a dozen expeditions to Antarctica. He is also the author of Uncertain Science, Uncertain World and has lectured widely on climate science for non-specialist audiences.
