Specialty Digest

DISCOVER IDEAS THAT SHAPE OUR WORLD

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History

The latest Specialty Digest coverage in History.

History

History
New Zealand troops in a World War I trench, photographed in May 1917.

What Actually Caused World War I?

The textbook shorthand is that a single assassination started World War I. That is true in the narrowest sense and misleading in every other one. The killing of one man in Sarajevo lit the fuse, but the explosives had been stacked up for decades — in arms races, treaty obligations, colonial rivalries and national grudges […]

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One assassination lit the fuse in Sarajevo. Decades of arms races, treaty obligations and colonial rivalry are why the whole continent went up with it.

History
Herbert Grove Dorsey with the Dorsey Fathometer, an early acoustic echo-sounding device used to map the ocean floor, circa 1930

The Forgotten Engineers Who Mapped the World’s Oceans by Sound

Long before satellites, a small community of acoustic engineers built the first real picture of the ocean floor — and one physicist’s name became attached to the instrument that made it possible. The photograph is unassuming: a middle-aged man in a suit, standing beside a boxy metal instrument roughly the size of a large radio

The Forgotten Engineers Who Mapped the World’s Oceans by Sound Read More »

Long before satellites, a small community of acoustic engineers built the first real picture of the ocean floor.