Free Audiobooks
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The Four-Minute Mile
Bannister's 1954 Record and the Physiology of Middle-Distance Running
Antonio Stradivari and Cremonese Violin Making
The Workshop, the Varnish Theories, and Modern Blind Tests
Home Field
How Local Stadiums Shaped American Cities
The Hour of Lead
What Endurance Does to the Human Body
The History of the Salt Trade
Caravan Routes, Salt Taxes, and the Politics of a Mineral
The Library of Alexandria
What It Held, and What Actually Happened to It
The Voyager Golden Record
What Was Put on It, and How It Was Chosen
The Dust Bowl
Ploughing, Drought, and the 1930s Collapse of the Southern Plains
Ignaz Semmelweis and Handwashing
Childbed Fever, Chlorinated Lime, and a Rejected Discovery
The Tunguska Event
The 1908 Siberian Airburst and What It Means for Impact Risk
Norman Borlaug and the Green Revolution
Dwarf Wheat, Record Harvests, and the Criticisms That Followed
The Ozone Hole and the Montreal Protocol
CFCs, the 1985 Discovery, and the Treaty That Reversed It
The Transatlantic Telegraph Cable
Four Failed Attempts and the 1866 Cable That Worked
The Eradication of Smallpox
Vaccination, Ring Containment, and the Last Natural Case
Mendeleev and the Periodic Table
Ordering the Elements and Predicting the Ones Not Yet Found
The Great Stink
How London's 1858 Sewage Crisis Produced a Modern Sewer System
Clair Patterson and the Age of the Earth
Lead Isotopes, 4.55 Billion Years, and the Fight to Ban Leaded Petrol
Continental Drift and Plate Tectonics
How Wegener's Rejected Theory Became Established Geology
Rosalind Franklin and the Structure of DNA
X-Ray Crystallography, Photo 51, and a Disputed Credit
The Transit of Venus
How the 1761 and 1769 Expeditions Measured the Solar System
John Harrison and the Marine Chronometer
How Accurate Timekeeping Solved the Longitude Problem
The 1854 Broad Street Cholera Outbreak
John Snow, the Pump Handle, and the Origins of Epidemiology
The Antikythera Mechanism
How an Ancient Greek Geared Device Predicted Eclipses
The Eightfold Path, Practically
Buddhist Ethics for Secular Readers
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