New Books In Environmental Studies

News reports warn of rising sea levels spurred by climate change. Waters inch ever higher, disrupting delicate ecosystems and threatening island and coastal communities. The baseline for these measurements—sea level—may seem unremarkable, a long-familiar zero point for altitude. But as Dr. Wilko Graf von Hardenberg reveals, the history of defining and measuring sea level is intertwined with national ambitions, commercial concerns, and shifting relationships between people and the ocean. Sea Level: A History (University of Chicago Press, 2024) by Dr. Wilko Graf von Hardenberg provides a detailed and innovative account of how mean sea level was first defined, how it became the prime reference point for surveying and cartography, and how it emerged as a powerful mark of humanity’s impact on the earth. With Dr. Hardenberg as our guide, we traverse the muddy spaces of Venice and Amsterdam, the coasts of the Baltic Sea, the Panama and Suez canals, and the Himalayan foothills. Born out of Enlightenment studies of ph