Mount Everest has been an enigma for centuries. While an object of worship historically, it presented itself as a tantalising puzzle to the measurement-obsessed surveyors of the East India Company. However this puzzle presented itself in the way it did, only because of an ambitious enterprise that sought to answer a much more fundamental question: What is the exact shape of the earth? 

In the first of a  two-episode deep dive, we look into the exploits of William Lambton, who pioneered India's first 'Big Data' exercise called Great Trigonometrical Survey of India.

The Rearview is a podcast where the hosts guide you on a scenic route through the history of science. Filled with fascinating anecdotes, deep archival dives, and a closer look at the quirky minds behind groundbreaking ideas.

Hosts: Jacob Koshy and Sobhana K Nair

Edited and produced by Jude Francis Weston

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