Could a Massive Volcanic Eruption Have Led to Napoleon's Loss at Waterloo?

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Losing parties often have excuses for why they came up short. If you’re playing softball, maybe the sun got in your eyes. If you drop a Monopoly game, maybe someone cheated and squatted on Park Place. And if you’re Napoleon Bonaparte, maybe an Indonesian volcano helps explain why you lost the Battle of Waterloo.

Obviously, Napoleon isn’t around to lay blame for his defeat in Belgium in 1815, a conflict that ended his long reign as France’s emperor and premier military strategist. But recent research into how volcanic eruptions can influence weather patterns might be able to offer insight into why Napoleon made the fateful choice of delaying engagement against the Duke of Wellington’s forces 12 miles south of Brussels.

A paper published in the journal Geology [PDF] and authored by Imperial College earth scientist Matthew J. Genge offers new information about how high volcanic ash can rise following an eruption. Previously, it was believed ash could reach as high as the stratosphere, or 31 miles above Earth’s surface. Genge’s research, based on computer modeling, suggests that an electrostatically charged volcanic plume could force the ash even further, sending it 50 to 600 miles up and into the ionosphere, where the particles can cause cloud formation and precipitation.

An illustration depicts Napoleon at the Battle of Waterloo
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Two months before Napoleon arrived on the scene at Waterloo, Mount Tambora in Indonesia exploded, likely sending ash into the ionosphere. More than 8000 miles away from Belgium, the ash scattered for months, slowly migrating to Europe. Some climate historians have inferred that the resulting precipitation in Belgium created a waterlogged battleground for Napoleon and the opposing Prussian and British armies. It was this muddy, uneven terrain that likely prompted Napoleon to hold off advancing until the middle of the day, allowing his rivals to gather their forces and eventually forcing his retreat.

While Mount Tambora’s eruption was devastating—it killed 100,000 people on the island of Sumbawa and forced a global temperature drop of more than 5°F in 1816—the theory that it led directly to Napoleon’s defeat is hard to substantiate. While waiting until later in the day to attack and having unsure footing didn’t help, Napoleon's opposition was fighting in the same conditions and may have outmaneuvered him regardless. In one key sequence, he failed to follow up on an effective artillery attack, allowing Wellington to compose his forces and make a successful bid to end the scuffle.

Genge draws heavily on the behavior of volcanic ash from two subsequent massive eruptions—Indonesia's Krakatau in 1883 and the Philippines's Mount Pinatubo in 1991—to illustrate his “short-circuited” theory of ionosphere disruption, and not from Tambora specifically. While rain may have indeed altered Napoleon’s plans, it may not necessarily have been the result of Tambora. Genge's work will, however, likely inspire further investigation into how inclement weather may have changed the course of history.

[h/t Smithsonian]

9 Other Things That Happened on July 4

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iStock/LPETTET

Of course we know that July 4 is Independence Day in the U.S. But lots of other things have happened on that date as well. Here are just a few of them:

1. Three former presidents died.

On July 4, 1826, John Adams and Thomas Jefferson—America's second and third presidents, respectively—both passed away. The two politicians had a love-hate relationship, and Adams's last words were supposedly, "Thomas Jefferson survives." (He didn't know that Jefferson had passed away a few hours earlier.) Exactly five years later, on July 4, 1831, fifth U.S. President James Monroe died in New York City.

2. Henry David Thoreau moved to Walden Pond.

On July 4, 1845, Henry David Thoreau began his two-year living experiment at Walden Pond, near Concord, Massachusetts.

3. Alice Liddell first heard the story of Alice in Wonderland.

On July 4, 1862, little Alice Liddell listened to a story told by Lewis Carroll during a boat trip on the Thames ... it would later become, of course, Alice's Adventures in Wonderland. It was published exactly three years later—on July 4, 1865.

4. Two famous advice columnists were born.

On July 4, 1918, twin sisters Esther Pauline and Pauline Esther Friedman were born. Today they're better known as Ann Landers and Dear Abby.

5. George Steinbrenner came into the world.

On July 4, 1930, future Yankees owner George Steinbrenner was born (and presumably fired the doctor immediately).

6. Lou Gehrig delivered his retirement speech.

On July 4, 1939, Lou Gehrig gave his famous retirement speech at Yankee Stadium after being diagnosed with ALS. He tells the crowd that he considers himself "the luckiest man on the face of the earth."

7. The Zodiac Killer killed for the first time. (As far as we know.)

On July 4, 1968, the Zodiac Killer murdered his first victims (that we know of) at Lake Herman Road in Benicia, California.

8. Koko was born.

On July 4, 1971, Koko, the sign-language gorilla, was born.

9. Bob Ross passed away.

On July 4, 1995, Bob Ross died, and all over the world, Happy Little Trees were a little less happy.

This list first ran in 2008 and was updated for 2019.

16 Savage Teddy Roosevelt Insults

George C. Beresford, Hulton Archive/Getty Images
George C. Beresford, Hulton Archive/Getty Images

Theodore Roosevelt had a way with words. Over his lifetime, the eminently quotable president and author popularized many witty turns of phrase. And though he wasn’t fond of swearing, Roosevelt didn't always speak softly, either—he was capable of delivering a savage insult when he felt it was appropriate (though usually he saved his irritation for letters and didn't deliver the insult to his enemy’s face). Here are just a few of them.

1. “An amiable old fuzzy-wuzzy with sweetbread brains.”

This insult was leveled at an anonymous Supreme Court Justice who dared to cross Roosevelt.

2. “A well-meaning, pin-headed, anarchistic crank, of hirsute and slab-sided aspect.”

Said of the Populist Senator from Kansas William Alfred Peffer, who was indeed hairy, tall, and lean.

3. “The shifty, adroit, and selfish logothete in the White House.”

According to historian Edmund Morris, in 1915 Edith Wharton had asked Roosevelt to visit Europe and report on what was happening to the French in World War I. But Roosevelt proclaimed that he would only go when he could fight, which he considered unlikely under President Woodrow Wilson, who Roosevelt said "cannot be kicked into war." The former president didn't have kind words for Wilson's supporters, either; he called them "flubdubs and mollycoddles."

4. “A cold-blooded, narrow-minded, prejudiced, obstinate, timid old psalm-singing Indianapolis politician.”

When he wrote this, Roosevelt was insulting President Benjamin Harrison, who had appointed Roosevelt as a reform commissioner because he owed TR a favor. Harrison quickly came to regret it: Soon after Roosevelt was appointed, he investigated Indianapolis Postmaster William Wallace … Harrison’s best friend. 

5. “[A] little emasculated mass of inanity.”

Roosevelt said this of novelist Henry James. James, for his part, said that Roosevelt was “dangerous,” and “the mere monstrous embodiment of unprecedented and resounding Noise.”

6. “The most intolerably slow of all men who ever adored red tape.”

This isn’t the nicest thing to say about one of your colleagues—in this case, one of TR’s fellow Civil Service Commissioners (and Civil War veteran), Charles Lyman. According to Lyman’s Men of Mark in America entry, published in 1906, “While Mr. Roosevelt's work and attention were largely given to the investigation of abuses and violations of the law and rules, and to the education of public opinion in favor of the reform, through public addresses and the press, Mr. Lyman's work was almost wholly administrative and constructive, his purpose and effort being to establish the reform on a sound and conservative basis and to develop it according to the more obvious and pressing needs of the public service.”

7. “A professional yodeler, a human trombone.”

Said of William Jennings Bryan, then Secretary of State to Woodrow Wilson.

8. “That leprous spot upon our civilization.”

Roosevelt didn’t have kind words for William Randolph Hearst’s New York Journal, who dared “[portray] me as attacking labor when I enforce the law as regards Miller in the Printing Office,” Roosevelt wrote to Harrison Gray Otis in 1903. Earlier, the paper had published an interview in which Roosevelt supposedly called the paper’s coverage of the lead up to the Spanish-American War “most commendable and accurate.” The paper’s coverage was actually full of inaccuracies, and according to Roosevelt, he never gave that interview—and loudly denied those words of praise.

9. “Puzzlewit,” “Fathead,” “Brains less than a guinea pig.”

Roosevelt reserved some of his harshest words for his hand-picked successor. Roosevelt and William Howard Taft had a falling out; eventually, after challenging Taft for the Republican nomination (saying, "I'll name the compromise candidate. He'll be me. I'll name the compromise platform. It will be our platform”) Roosevelt ran against Taft in 1912 as a member of the Progressive party, a.k.a. the Bull Moose Party, and that’s when the gloves came off.

And in case the guinea pig reference seems random, Roosevelt once explained that “Just as machinery can be expressed in terms of horsepower, so some intellect can be expressed in terms of guinea pig power,” and that certain accusations against him “can only be heeded by men with brains of about three-guinea-pig power.” After which the St. Louis Dispatch opined, "Col. Theodore Roosevelt has further enriched the language which so many of his phrases now adorn by producing the following conjunctive description: ‘Three-guinea-pig-power brain.’ This is considered vastly superior to Woodrow Wilson’s ‘single track mind’ phrase, which had a brief vogue.”

10. “A flubdub with a streak of the second-rate and the common in him."

Another insult aimed at Taft.

11. “The true old-style Jeffersonian of the barbaric blatherskite variety.”

According to Merriam-Webster, a blatherskite is “a person who blathers a lot.” In this case, Roosevelt was referring to Mississippi Congressman John Sharp Williams, who served as the Minority Leader of the United States House of Representatives from 1903 until 1908.

12. “He is evidently a maniac, morally no less than mentally.”

TR was a man of morals, and he used these harsh words in reference to his brother, Elliott Roosevelt, who had an affair out of wedlock that resulted in a pregnancy. In his autobiography, Teddy wrote, “Moreover, public opinion and the law should combine to hunt down the ‘flagrant man swine’ who himself hunts down poor or silly or unprotected girls.”

13. “[A] hypocritical haberdasher … An ill-constitutioned creature, oily, but with bristles sticking up through the oil.”

Said of Postmaster General John Wanamaker, after Wanamaker refused to intervene when Milwaukee Postmaster George H. Paul (more on him in a bit!) had “dismissed Hamilton Shidy for treachery and insubordination,” according to Edmund Morris. Shidy had testified against Paul in corruption proceedings.

14. “About as thorough-paced a scoundrel as I ever saw. An oily-Gammon, church-going specimen.”

Here, Roosevelt was calling Milwaukee Postmaster George H. Paul a fatty ham in addition to a scoundrel. (Paul would eventually resign in 1889.)

15. "Too small game to shoot twice."

Roosevelt leveled this dig at William J. Long, after the Wilderness Ways author attacked the president for giving an interview in which Roosevelt had accused Long of being a “nature faker.”

16. “He seems to have a brain of about eight-guinea-pig-power ... it is useless to have a worthy creature of mutton-suet consistency like the good Sir Mortimer.”

Written in a letter to Whitelaw Reid. Sir Mortimer Durand was a shy and formal British Ambassador to the United States from 1903-1906 (he also lent his name to the Durand line between Pakistan and Afghanistan). The diplomat was a huge fan of Roosevelt; Cecil Spring Rice wrote that “My chief (Durand) thinks Teddy R. the greatest man in the world and has treated me with immense respect since I let on that I correspond with Teddy. I tell him stories and he listens open-mouthed.” But Durand couldn’t keep up with Roosevelt, either in conversation or physically. Once, when the two went for a walk, Durand recounted in his diary that Roosevelt “made me struggle through bushes and over rocks for two hours and a half, at an impossible speed, till I was so done that I could hardly stand.” Yup, that sounds like Teddy!

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