The best books on voyages of discovery that were about science, not conquest

When British scientist and novelist CP Snow lamented that society had become divided between scientific and literary cultures, he sought a way to bridge that gap. He needed to look no further than Mary Terrall’s hero, Pierre-Louis Moreau de Maupertuis, who was the very model of a modern scientist-artist.

Maupertuis achieved early scientific fame by leading a geodesic voyage to Lapland (modern-day Sweden and Finland) in 1736, where, after a year of fighting extreme cold and summer plagues of mosquitoes, he proved Newton’s theory that the Earth was flattened at the poles. Maupertuis became a regular fixture in the cafes and literary salons of 18th-century Paris and Berlin and helped transform European society in the Age of Enlightenment.  

Dava Sobel’s made-for-the-public story about a David-versus-Goliath contest to solve a centuries-old problem was the first scientific blockbuster when it came out in 1998. It was the model that future science historians like me strove to replicate–addressing important but arcane scientific controversies in a clear, accessible way.

Sobel made this story relatable to a broad audience by focusing on the travails of one underdog, a rural carpenter named John Harrison, who went up against the British astronomy establishment to discover how to plot longitude at sea by inventing a precise marine chronometer.

The 1761 voyage of HMS Deptford established the accuracy of Harrison’s “sea watch” and solved the problem of navigating across the vast oceans.   

In the late 18th century, European scientists claimed that “the sciences were never at war,” using as an example the international Transit of Venus voyages that took place during the height of the Seven Years’ War.

Even though the two opposing sides–France and Britain–were engaged in one of the bloodiest conflicts of that century, scientists from those two nations, as well as many allied nations on both sides, traveled vast distances across the globe (including Tahiti, South Africa, and Siberia) to witness the two Transits of Venus, 1761 and 1769.

Facing not just war but also fierce cold, disease, and the perils of ocean navigation (see Longitude above), the astronomers combined their observations to give mankind its first glimpse of the enormous scale of our solar system.      

By the end of the 18th century, the Spanish had an “empire upon which the sun never sets” long before the British claimed that title. Spain funded more scientific voyages than any other nation to explore and document its empire, the most famous of which was led by Alessandro Malaspina, the Italian-born naval officer who served the Spanish crown.

With two specially-built corvettes, the expedition departed Spain in 1789 to explore Pacific territories as far-flung as Alaska and New Zealand, chronicling and documenting the natural environments, flora and fauna, peoples, cultures, and even political upheavals that enveloped the region. It was also the first long-distance voyage to successfully combat scurvy.

Malaspina’s eye-opening reports were unfortunately hidden from view in the wake of Spain’s own political upheavals, and not fully appreciated until almost two centuries later.     

Alexander von Humboldt’s name is synonymous with scientific discovery today–the Humboldt Current, the Humboldt Redwoods State Park, and countless species named for him. Humboldt revolutionized our modern understanding of the natural sciences–geology, biology, meteorology, and much else–with his epic five-year voyage that set off in 1799 and brought him through the Amazon, the Caribbean, and North and South America. 

Like Malaspina before him, Humboldt studied not only the flora and fauna of these regions but also their peoples and the political turmoil that was building towards revolution. He met with the leaders of the time–Thomas Jefferson and Simón Bolívar among them–and opened their eyes to the richness of their lands. Unlike Malaspina, Humboldt’s works were published to wide acclaim and established the idea that all nature, including human nature, is interconnected.