In February 1806 a twenty-three-year-old Boston dropout named Frederic Tudor sailed eighty tons of pond ice to Martinique, where nobody had anywhere to keep it, and the Boston Gazette hoped the venture would "not prove a slippery speculation." Jeff and Cyrus follow cold from that ship across two hundred years: the ice trade that taught whole cities to expect cold and then laughed a Florida doctor's ice machine out of the market; the Munich compressor that finally ran all summer, and the Chicago meatpacker and New Zealand sea captain who turned it into a chain; the chemist hired under her initials who made stored food trustworthy, the physicists who built a refrigerator with no moving parts, and the gas that made the kitchen safe; and the postdoc, the about-to-be-defunded Antarctic monitoring program, and the treaty that fixed the hole that gas made in the sky. In the middle of the episode, five minutes on how the box in your kitchen actually works — and why the coils on the back are warm. It ends with the Backbone Test: what depends on cold, what it costs, whether we could go back, and what to ask of any technology that is spreading fast.

Watch the video: youtu.be/LYjROtynHI8

Chapters

• 0:00 — The Hook: Tudor's ship, the Gazette's joke, debtors' prison, "Let those laugh who win" — and the world before cold: Calcutta's clay-pot ice, the summer complaint, swill milk, and why bacon and salt cod exist
• 11:41 — Cold as a Commodity: sawdust, Wyeth's plow, free ice for bartenders, Calcutta, Gorrie's champagne buckets, and the Ice Trust of 1900
• 32:12 — The Machine and the Chain: forty years of inventors, Harrison's meat in the sea, the blockade runners, Linde's seal, how a refrigerator works, Swift's railcars, the Dunedin, and Minnesota v. Barber
• 55:23 — Cold Comes Home: M.E. Pennington, the cold-storage banquet, refrigerant deaths, the Einstein–Szilárd refrigerator, the Monitor-Top, the utilities' thirty-five months, and Midgley's candle
• 1:16:47 — Cold and the Sky: Midgley's death, Rowland and Molina, DuPont's pledge, Halley Station, NASA's flagged data, Reagan against his cabinet, Montreal, DuPont's twenty days, Kigali, and the billion people still waiting
• 1:35:55 — The Big Picture: the numbers, the Backbone Test, the disagreement over cost, and what the story teaches

People Mentioned

The ice trade (1806–1900)

• Frederic Tudor (1783–1864) — Boston merchant who created the natural-ice trade; jailed for debt, mocked in print, later "the Ice King." Repaid a second ruin — $280,154.59 — in full by 1849.
• William Tudor — Frederic's Harvard-educated older brother, whose 1801 journal despaired of him; co-founder of the North American Review.
• Nathaniel Jarvis Wyeth (1802–1856) — Tudor's Fresh Pond foreman; invented the horse-drawn ice plow that made ice a uniform, priceable commodity.
• Louis Philippe de Roffignac — reforming mayor of New Orleans (1820–28) who, by the city's own legend, had a cargo of ice dumped in the Mississippi. A cocktail served over ice is named for him.
• Henry David Thoreau — watched Tudor's crews cut Walden Pond in the winter of 1846–47; "The pure Walden water is mingled with the sacred water of the Ganges."
• John Gorrie (1803–1855) — Apalachicola fever doctor who made ice by machine in 1844, served it at a Bastille Day dinner in 1850, patented it in 1851 (U.S. Patent 8,080), and died ruined. His statue stands in the U.S. Capitol.
• Charles W. Morse (1856–1933) — Maine ice dealer who built the American Ice Company, doubled New York's ice price in 1900, and later went to prison for bank fraud.
• Robert Van Wyck and Richard Croker — New York's mayor and Tammany Hall's boss, both holding Ice Trust stock when the price doubled.
• Jacob Riis — reporter whose How the Other Half Lives (1890) describes the "summer doctors" and the coffins on the charity boat.

The machine and the chain (1748–1890)

• William Cullen, Oliver Evans, Jacob Perkins — the principle (1748), the paper cycle (1805), and the first vapor-compression patent (1834); none of it sold.
• James Harrison (1816–1893) — Geelong newspaperman who built the first commercial ice plant (1854) and lost a shipload of frozen meat to the sea in 1873.
• Ferdinand Carré — French inventor of the ammonia absorption machine (1859) that ran the blockade into New Orleans.
• Daniel Holden — former Confederate engineer whose distilled-water ice made machine ice clear.
• Carl von Linde (1842–1934) — Munich professor whose 1876 ammonia compressor, built for the Spaten brewery under Gabriel Sedlmayr, ran thirty-one years in a Trieste cellar. Linde plc survives.
• Adolphus Busch — pasteurized beer, refrigerated railcars, and the first national beer brand.
• Gustavus Swift (1839–1903) — Cape Cod butcher's apprentice who shipped the meat instead of the animal; engineer Andrew Chase designed his refrigerator car.
• Captain John Whitson — master of the Dunedin, hauled out of his own frozen hold by the heels in 1882.
• Henry Barber — St. Paul meat dealer whose hundred pounds of Illinois beef became Minnesota v. Barber (1890); Justice John Marshall Harlan wrote the unanimous opinion.
• Senator George Vest — led the 1888–90 Senate inquiry into the Chicago packers; Henry Veeder was the lawyer in whose office their pool met.

Cold comes home (1907–1950)

• Mary Engle Pennington (1872–1952) — chemist hired by the USDA as "M.E. Pennington"; put thermometers in railcars and wrote the rules for cold storage. The press called her "the Ice Woman."
• Harvey Wiley — chief of the USDA Bureau of Chemistry, who filed her paperwork under her initials.
• Albert Einstein and Leó Szilárd — designed refrigerators with no moving parts (1926–33); their engineer Albert Korodi built the pump that "howled like a jackal."
• Christian Steenstrup — GE engineer who welded motor and compressor into one sealed dome: the Monitor-Top (1927).
• Charles Kettering and Thomas Midgley Jr. (1889–1944) — GM's research chief and the chemist who, with Albert Henne, made dichlorodifluoromethane — Freon — in 1928, and blew out a candle with it in 1930.
• Clarence Birdseye — put the first frozen foods in a grocery store, March 1930.

Cold and the sky (1944–present)

• J.R. McNeill — environmental historian who wrote that Midgley "had more impact on the atmosphere than any other single organism in earth history."
• F. Sherwood Rowland and Mario Molina — UC Irvine chemists who worked out the CFC–ozone chain in 1973–74 (Nobel Prize, 1995); Joan Rowland threw out the spray cans.
• Jim Lovelock — measured CFCs everywhere in the air, 1972.
• Joe Farman, Brian Gardiner, Jonathan Shanklin — British Antarctic Survey scientists who found the ozone hole from Halley Station's records (1985).
• Susan Solomon