Why Are Your Favorite Rain Boots Called 'Wellies'?

iStock.com/coramueller
iStock.com/coramueller

The official April rainy season is here, and most of us have a raincoat, an umbrella, and our trusty pair of Wellies ready by the door. The popular boot has been around for nearly 200 years, and just like sandwiches and afternoon tea, Wellingtons are a still-practical mainstay that we can thank the British aristocracy for.

In the 18th and early 19th centuries, German Hessian boots, with their low heels and high knees, were both fashionable and practical military garb. The raised knee gave extra protection to cavalry men on horses, and the decorative tassels gave them a daytime-to-eveningwear look. But, they were meant to be worn with knee breeches, and when those pants went out of style, the Hessian boot needed to be modified.

Arthur Wellesley, the 1st Duke of Wellington, in his German Hessian boots, circa 1814.
Arthur Wellesley, the 1st Duke of Wellington, in his German Hessian boots, circa 1814.
Fox Photos/Hulton Archive/Getty Images

Enter Arthur Wellesley, the 1st Duke of Wellington, a highly decorated war hero who commanded the army that defeated Napoleon at Waterloo (Wellington would later go on to become Prime Minister). Often noted as an extremely practical man, in 1817 he asked his St. James's Street shoemaker to modify his current Hessians. The lining was removed so that the boot would more easily fit over the popular long trousers, and, rather than the polished leather that had made Hessians all the rage, the shoemaker crafted the Duke's boots out of a more durable calfskin.

The look quickly caught on. Not only were the boots still fitted in the fashionable style, they now accommodated the new long pant and had the added benefit of being fairly waterproof (a boon in Britain's famously rainy climate). The fops and dandies of High Street—including the fashion-forward influencer Beau Brummell—clamored after the look, and the Duke's name forever became associated with the boot.

Arthur Charles Wellesley, the 4th Duke of Wellington, models the boots his great-grandfather helped make popular, circa 1930.
Arthur Charles Wellesley, the 4th Duke of Wellington, models the boots his great-grandfather helped make popular, circa 1930.
Topical Press Agency/Hulton Archive/Getty Images

Eventually, new technology caught up with the look. In 1852, Charles Goodyear invented natural rubber. American industrialist Hiram Hutchinson acquired the patent to develop footwear from the rubber, and his subsequent workshoes became must-haves for farmers and field workers. When World War I hit, the company that would become Hunter Boots manufactured Wellington-style waterproof boots that could withstand muddy trenches for the troops. The Duke could not have known it at the time, but his namesake footwear would serve as an important piece of protection for the British army decades after his death.

The style never faded, and today, Hunters and other Wellington-style rubber boots are considered the gold standard for wet-weather wear.

Why Are Sloths So Slow?

Sloths have little problem holding still for nature photographers.
Sloths have little problem holding still for nature photographers.
Geoview/iStock via Getty Images

When it comes to physical activity, few animals have as maligned a reputation as the sloth. The six sloth species, which call Brazil and Panama home, move with no urgency, having seemingly adapted to an existence that allows for a life lived in slow motion. But what makes sloths so sedate? And what horrible, poop-related price must they pay in order to maintain life in the slow lane?

According to HowStuffWorks, the sloth’s limited movements are primarily the result of their diet. Residing mainly in the canopy vines of Central and South American forests, sloths dine out on leaves, fruits, and buds. With virtually no fat or protein, sloths conserve energy by taking a leisurely approach to life. On average, a sloth will climb or travel roughly 125 feet per day. On land, it takes them roughly one minute to move just one foot.

A sloth’s digestive system matches their locomotion. After munching leaves using their lips—they have no incisors—it can take up to a month for their meals to be fully digested. And a sloth's metabolic rate is 40 to 45 percent slower than most mammals' to help compensate for their low caloric intake. With so little fuel to burn, a sloth makes the most of it.

Deliberate movement shouldn’t be confused for weakness, however. Sloths can hang from branches for hours, showing off some impressive stamina. And because they spend most of their time high up in trees, they have no need for rapid movement to evade predators.

There is, however, one major downside to the sloth's leisurely lifestyle. Owing to their meager diet, they typically only have to poop once per week. Like going in a public bathroom, this can be a stressful event, as it means going to the ground and risking detection by predators—which puts their lives on the line. Worse, that slow bowel motility means they’re trying to push out nearly one-third of their body weight in feces at a time. It's something to consider the next time you feel envious of their chill lifestyle.

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Are Any of the Scientific Instruments Left on the Moon By the Apollo Astronauts Still Functional?

Apollo 11 astronaut Neil Armstrong left the first footprint on the Moon on July 20, 1969.
Apollo 11 astronaut Neil Armstrong left the first footprint on the Moon on July 20, 1969.
Heritage Space/Heritage Images/Getty Images

C Stuart Hardwick:

The retroreflectors left as part of the Apollo Lunar Ranging Experiment are still fully functional, though their reflective efficiency has diminished over the years.

This deterioration is actually now delivering valuable data. The deterioration has multiple causes including micrometeorite impacts and dust deposition on the reflector surface, and chemical degradation of the mirror surface on the underside—among other things.

As technology has advanced, ground station sensitivity has been repeatedly upgraded faster than the reflectors have deteriorated. As a result, measurements have gotten better, not worse, and measurements of the degradation itself have, among other things, lent support to the idea that static electric charge gives the moon an ephemeral periodic near-surface pseudo-atmosphere of electrically levitating dust.

No other Apollo experiments on the moon remain functional. All the missions except the first included experiment packages powered by radiothermoelectric generators (RTGs), which operated until they were ordered to shut down on September 30, 1977. This was done to save money, but also because by then the RTGs could no longer power the transmitters or any instruments, and the control room used to maintain contact was needed for other purposes.

Because of fears that some problem might force Apollo 11 to abort back to orbit soon after landing, Apollo 11 deployed a simplified experiment package including a solar-powered seismometer which failed after 21 days.

This post originally appeared on Quora. Click here to view.

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