9 Secrets of Antarctic Scientists

A scientist monitors one of the world's largest Adélie penguin colonies near Cape Crozier, Antarctica.
A scientist monitors one of the world's largest Adélie penguin colonies near Cape Crozier, Antarctica.
Peter Rejcek, National Science Foundation

Antarctica is the coldest, windiest, and sometimes the darkest place on Earth. And yet hundreds of people go there each year to conduct scientific research and work as support staff at dozens of stations scattered across the continent. In summer, the high season for polar activity, the sun never sets, offering scientists and support teams an opportunity to play soccer on the ice or sunbathe in blinding, cloud-free rays. Winter envelops the land in frigid darkness—and inspires the few "winter-overs" to indulge in naked footraces around the station. Mental Floss spoke to a few Antarctic scientists about what it's really like to carry out research there, including the hacks that help them survive the elements.

1. THEY LEARN ON THE FLY.

Scientists participating in the United States Antarctic Program (USAP), which runs all of the American research and operations on the continent, go through an introductory briefing about living and working at the three American stations: McMurdo, the largest, which is located on Ross Island; Palmer, on Anvers Island off the Antarctica Peninsula; and the Amundsen-Scott South Pole Station.

But with so many complex protocols needed for daily life, new arrivals often find themselves on a steep learning curve. "There's no manual for a lot of things," Michelle LaRue, an ecologist who studies Adélie and emperor penguins and seals in the Southern Ocean and is often based at McMurdo, tells Mental Floss. "There are appointments for everything—food, field supplies, et cetera—and you need a certain amount of lead time before you get into the field. I quickly learned that even though you think you're ready, there's something else you're missing. Thankfully the support crew there is amazing. I don't know what we would have done without them."

2. THEY HAVE TO PACK CAREFULLY.

Gathering everything for an extended mission can be tricky if you can't depend on regular resupply shipments. "Packing for 18 months away is a total nightmare. Ever tried to work out how many tampons you might need for that long? Or conditioner?" ecologist Jess Walkup tells Mental Floss. Walkup began her career with the British Antarctic Survey (BAS) studying albatrosses on South Georgia and is now the base commander at the BAS's Rothera station leading the 2018 wintering team.

"I ran out of anti-perspirant on one trip, and that was awful," she says. "Thankfully I was on an island with just three men and thousands of stinky seals, so no one seemed to notice."

3. THEY HACK THEIR CIRCADIAN RHYTHMS.

Scientists and support staff who serve in the Antarctic summer, from October through March, often contend with round-the-clock daylight. Many bring eye masks and blackout curtains so they can retain their regular sleep-wake schedule—but it's tempting to want to stay up. "After working all day, all I want to do is catch up with friends or go hiking. Time gets away from you pretty quickly, and before you know it, you're going to bed way later than you should," LaRue says.

The Antarctic winter, however, is another matter. The sun doesn't rise for several months, leaving the entire continent in extreme darkness (except for the twinkling of stars and the aurora australis). "I found that I was shattered all day and then slept badly at night," Walkup says. "In the early afternoon I would have a massive slump and feel like it was 3 a.m. and I had been awake for a week." She adjusted by using a SAD lamp on her desk and getting into a routine of winding down and going to bed at the same time each night. On the base, she says, "Your bed is one of the only places you can get some time alone."

4. THEY HAVE STRANGE TASTES IN MOVIES.

The Milky Way and aurora australis over the South Pole
The Milky Way and aurora australis illuminate the Amundsen-Scott South Pole Station in winter.
Patrick Cullis, National Science Foundation

It's not all work and no play for Antarctic scientists and staff. The isolation and rough conditions create a sense of camaraderie that is celebrated at certain times of the year. To mark Midwinter's Day in the middle of June (the point when the sun begins its return back south), the BAS bases, the Amundsen-Scott South Pole Station, and many others watch The Thing ("the original, obviously!" Walkup says). In John Carpenter's 1982 horror film, a parasitic alien invades an Antarctic base and steadily takes over the minds of the researchers stationed there, with much gore, violence, and paranoia. Winter-overs also watch the 1980 classic The Shining, a similarly chilly flick featuring an unhealthy dose of insanity.

In August, many of the Antarctic stations compete in the 48-Hour Winter Film Festival, in which teams submit short films that contain five key elements and are made in less than 48 hours. "We then watch all the submissions and vote on the winners under various categories, like at the Oscars. It’s a great way to learn about the international Antarctic community and see the inside of other stations," Walkup says. (Watch a selection from the 2016 festival on Vimeo).

5. THEY MAKE TIME TO PARTY.

Sure, scientists spend many hours tracking neutrinos, conducting wildlife surveys, collecting ice cores, and fulfilling other objectives. But when they're off the clock, they like to kick back. "Depending on the time of year, there's all kinds of iconic parties and events to attend: Halloween, Thanksgiving dinner, the marathon, talent shows, the film festival, IceStock—that's an outdoor concert on New Year's Eve. If you're in McMurdo over New Year's Eve, you have to go to IceStock," LaRue says.

However, some of the games and competitions might seem fatalistic to those with a greater array of entertainment options. For example, when the temperature drops to -50°C (-58°F), scientists and staff strip naked and run around their stations' perimeters, Walkup reports.

Even that's not as crazy as vying for membership in the 300 Club. When the temperature drops to -100°F at the South Pole station, daredevils first warm up in a 200°F sauna, then dash outside (naked, of course) to the spot marking the Geographic South Pole several yards away, then run shrieking back into the sauna—having experienced a 300-degree range in temperature in just a few minutes.

The activities don't just keep boredom at bay; they actually ward off the lethargic, depressive state one gets from living in extreme isolation, which the winter-overs call "toast." As Sven Lidström, a Swedish engineer who helped build the IceCube South Pole Neutrino Observatory, wrote in a 2012 blog post, "the cure for winter-over toastiness is fun and entertainment."

6. THEY START CRAVING SALAD …

McMurdo Station in Antarctica
McMurdo Station, Antarctica
Elaine Hood, National Science Foundation

According to Jason C. Anthony, author of Hoosh: Roast Penguin, Scurvy Day, and Other Stories of Antarctic Cuisine, much of the culinary history of the southern continent consists of "isolated, insulated people eating either prepackaged expedition food or butchered sea life." Now, 21st-century scientists chow down on three freshly prepared meals a day at McMurdo and other stations. "Of the five seasons I spent in, or worked out of, McMurdo, I only really remember one where freshies"—local slang for any kind of fresh produce—"were in noticeably short supply," LaRue says.

But scientists and staff still have to cope with the lack of some favorite foods—and those whose fitness for eating is debatable.

"We only really get two deliveries of fresh food a year, one around December and then again around March. All our milk is powdered, and I got used to that very quickly. Some people hate it, but in a cup of tea or a bowl of cereal, I don’t really notice. I wouldn’t drink a glass of it, though," Walkup says.

Walkup devised ways to test if months-old foods were still edible. "We were eating eggs nine months after they had been laid," she says. "Some eggs that look moldy on the outside, and even on the inside, are fine to eat. The trick is to break each egg into a cup to check that it is OK—i.e., doesn’t smell—before adding it to whatever you're making. If the eggs are starting to go, then this is vital—you don’t want to ruin your mixture with a bad egg."

They also get some surprising cravings. "The thing I missed was salad, as that doesn’t travel well," Walkup adds. "I was never a huge fan of salad before I went south, but now I love it."

7. … AND BOOZE.

No planes can fly supplies into the Amundsen-Scott South Pole Station for up to nine months of the year, because at temperatures below -50°C, the jet fuel freezes. That leaves the small group of winter-overs to their own devices. The company operating the station supplies the scientists and support teams with huge pallets of wine, beer, and spirits that give rise to a makeshift bar at the Amundsen-Scott South Pole Station dubbed Club 90 South. Phil Broughton, a health physicist who spent one long, dark winter there in the mid-aughts, was its de facto bartender.

He developed a protocol for distributing alcohol: serve enough to help the patrons get through the darkest weeks of winter, and then make sure that those who were completely plastered didn't go home. "The most dire danger in Antarctica is always failure to respect the absolutely lethal environment of Antarctica itself. I was far happier to serve until I could guide [the drinker] over to a couch to pass out than to see him stagger out into the -85°F night," Broughton wrote in a blog post.

Plenty of scientists carry in their favorite spirits, just in case their base runs out halfway through the season. Says LaRue, "Bringing scotch with you is a must."

8. SOMETIMES THEY ACTUALLY FEEL TOO WARM.

Scientists in the field have to wear layers upon layers of insulating clothing, bring more hand and foot warmers than they think they'll need, and stay active to avoid hypothermia. "I distinctly remember one snow machine trip back to town, where the wind was just whipping across our faces, my fingers were numb. It was really cold," LaRue says. "As soon as I parked the snow machine I got off and just ran as fast and as far as I could to warm up."

In the summer season, though, being bundled in Gore-Tex can make them too hot. The extremely dry climate prevents the chilly damp feeling of more temperate regions—and if the sun is shining, its rays bounce off the reflective ice and fry the researchers. "Sometimes you can get really warm and even work in shorts and a t-shirt," Walkup says. "At 79 degrees south it can be -10°C [14°F] in the height of summer, and the sun is really strong, so on a day with no wind it is warm enough to sunbathe—just don’t lay down in the snow."

9. THEY DON'T SEE POLAR BEARS.

Antarctica teems with wildlife: six species of penguins, six species of seal, countless seabirds, and majestic whales are the southern ocean's most charismatic fauna. Scientists won't see any mammals from that other pole, however. Says Walkup, "people always ask me if I have seen polar bears. I haven’t—they only live in the Arctic."

12 Secrets of Roller Coaster Designers

People ride a spinning roller coaster in the Santa Cruz Beach Boardwalk Park
People ride a spinning roller coaster in the Santa Cruz Beach Boardwalk Park
hanusst/iStock via Getty Images

Back in the early 20th century, engineers attempting to push the limits of roller coaster thrills subjected riders to risky upside-down turns and bloody noses. A century later, coaster designers rely on computer software, physics, and psychology to push the limits of the roughly 5000 rides in operation worldwide. To get a sense of what their job entails, Mental Floss spoke with several roller coaster specialists about everything from testing rides with water-filled dummies to how something as simple as paint can influence a coaster experience. Here’s what we learned.

1. Getting strapped in might be the most exciting part of the roller coaster ride.

Known as a “thrill engineer,” UK-based Brendan Walker consults with coaster manufacturers and parks on the psychology of riding the rails. In his experience, riders getting secured into their seats are at the peak of their excitement—even more so than during the ride itself. “The moment the lap bar is being locked down and you have that feeling of things being inescapable, that you have to suffer the effects of the ride, is the highest moment of arousal,” Walker says. “The actual ride might only achieve 80 percent of that excitement.”

2. Designers test roller coasters with water-filled dummies.

Bill Kitchen, founder of U.S. Thrill Rides, says it can take anywhere from two to five years for a coaster to go from idea to execution. Part of that process is devoted to the logistics of securing patents and permits for local site construction—the rest is extensive safety testing. “We’re subject to ASTM [American Society for Testing Materials] standards,” Kitchen says. “It covers every aspect of coasters. The rides are tested with what we call water dummies, or sometimes sandbags.”

The inanimate patrons allow designers to figure out how a coaster will react to the constant use and rider weight of a highly trafficked ride. The water dummies—which look a bit like crash test dummies, but filled with water—can be emptied or filled to simulate different weight capacities. Designers also sometimes use the kind of crash-test dummies found in the auto industry to observe any potential issues prior to actual humans climbing aboard.

3. Every foot of roller coaster track costs a lot of money.

Thrill seekers go upside-down while riding on the Mind Eraser roller coaster in Agawam, Massachusetts
Thrill seekers go upside-down while riding on the Mind Eraser roller coaster in Agawam, Massachusetts
Kirkikis/iStock via Getty Images

There is absolutely nothing random about the length of a coaster’s track. In addition to designing a ride based on the topography of a park site, designers take into account exactly how much space they’ll need to terrorize you and not an inch more. When England’s Alton Towers park was preparing to build a ride named TH13TEEN for a 2010 opening, they asked Walker exactly how much of a drop was needed to scare someone in the dark. “It was a practical question,” Walker says. “For every extra foot of steelwork, it would have cost them £30,000 [roughly $40,000].”

4. Rollercoaster Tycoon brought a lot of people into the business.

The popular PC game, first released in 1999, allowed users to methodically construct their own amusement parks, including the rides. As a proving ground for aspiring engineers and designers, it worked pretty well. Jeff Pike, President of Skyline Attractions, says he’s seen several people grow passionate about the industry as a direct result of the game. “I remember when the game first got popular, I would go to trade shows and there would be kids looking to get into it using screen shots of rides they designed. The game definitely brought a lot of people into the fold.”

5. Paint makes a big difference in coaster speed.

A group of tin metal cans with colorful paint
scanrail/iStock via Getty Images

For all of their high-tech design—the software, fabrication, and precise measures of energy—a good coaster ride can often come down to whether it’s got too much paint on it. “The one thing that will slow down a steel coaster is a build-up of paint on the track rails,” Pike says. “It softens where the wheel is rolling and hitting the track, which increases the drag.” A good, worn-in track will have gray or silver streaks where the wheel has worn down the paint, making it move more quickly.

6. A roller coaster’s skyline is key.

Brian Morrow, former Corporate Vice President for Theme Park Experience at SeaWorld Parks and Entertainment, says that the looming curvature of coasters spotted as guests drive toward and enter the park is very purposeful. “It’s like a movie trailer in that we want you to see some iconic coaster elements, but not the whole thing,” he says. “You approach it with anticipation.”

7. Some coasters arrive as giant model kits.

Whether a coaster’s theme or design comes first is largely left up to the end user—the amusement park. But for some rides, manufacturers are able to offer pre-fabricated constructions that designers can treat like the world’s biggest Erector Set. “Sometimes I work on rides that have already been built,” Walker says. “They’re produced by a company and presented almost like a kit with parts, like a model train set. There’s a curve here, a straight bit here, and you can pick your own layout depending on the lay of the land.”

8. Wooden roller coasters are weather-sensitive.

If you’ve ever been on a wooden coaster that seems a little shaky from one trip to the next, check the forecast: It might be because of the weather. Pike says that humidity and other factors can shrink the wood, affecting how bolts fit and leading to a slightly shakier experience. “The structure itself can flex back and forth,” he says. It’s still perfectly safe—it just takes more maintenance to make sure the wood and fasteners are in proper operating condition. A well-cared-for wooden coaster, Pike says, can usually outlast a steel model.

9. The time of day can affect the coaster experience.

“A coaster running in the morning could run slower when cooler,” Morrow says. “The wheels are not as warm, the bearings are warming up. That could be different by 2 p.m., with a slicked-up wheel chassis.” Coasters experiencing their first-ever test runs can also be slightly unpredictable, according to Pike. "Those first trial runs [during the testing phase] can be slow because everything is just so tight," he says. "A lot of coasters don't even make it around the track. It's not a failure. It's just super-slow."

10. Roller coaster designs can come from unusual places—like Jay Leno’s chin.

The twisting, undulating tracks of coasters can often be the result of necessity: Pike says that trees, underground piping, and available real estate all inform designers when it comes to placing a ride in a specific park. But when they have more freedom, coasters can sometimes take on the distinctive shape of whatever happens to be around the designers at the time of conception. “We had a giant piece of land in Holland that just had no constraints, and we were sitting around talking," Pike says. “And we started talking about Jay Leno’s chin.” The ride was a “loose” representation of the comedian's jaw, but “it is there.”

11. Roller coaster riders double as performers.

A woman taking a ride on a rollercoaster at Oktoberfest in Munich, Germany
A woman taking a ride on a rollercoaster at Oktoberfest in Munich, Germany
exithamster/iStock via Getty Images

For Walker, the best advertising for a coaster is having spectators watch riders de-board after an exhilarating experience. “It’s all about that emotion,” he says. “A spectator basically asks, ‘What’s making them so aroused? What’s giving them such pleasure?’ The line for the ride is the audience. Imagining yourself on the structure becomes a very powerful thing."

12. The future of coasters is vertical.

Biggest, fastest, longest—coasters are running out of superlatives. Because rides can only be designed with so many drips, rolls, or G forces, some companies are looking to the sky for their next big idea. Kitchen has been overseeing design of the Polercoaster for years: It’s a sprawling, skyscraper-esque ride that uses electromagnetic propulsion to carry riders upwards instead of across horizontal tracks. “We want to put it in places where land is very expensive, like the Vegas strip,” he says. “You can only do that if it takes up a lot less space.” The project is set to exceed the 456 feet of the current tallest ride, Kingda Ka at Six Flags in New Jersey. “It’ll be the world’s tallest—and hopefully the most fun.”

This list first ran in 2017.

Here's Why You Should Always Tip Your Delivery Driver With Cash

Khosrork/iStock via Getty Images
Khosrork/iStock via Getty Images

In our microchip- and app-happy society, we’ve all but abandoned paying for things in cold, hard cash. And while that’s almost definitely more efficient for you, it could be costing your delivery driver their tip, Lifehacker reports.

Some food delivery services guarantee a minimum payment for their drivers, which seems like a good thing on the surface. Basically, the company will pay the driver the agreed-upon base payment, even if it’s a slow shift and they don’t actually reach that amount in delivery charges. But it also means that everything they earn, including tip, is going toward that base payment. In other words, your tip is saving the company from having to pay more of the base payment.

The best way to ensure that your tip goes into your driver’s pocket is to give them a tip that they can literally put in their pocket—namely, cash. If you don’t have cash around or like to keep your finances digital for credit card rewards or tracking purposes, you should choose a delivery service that promises to pay their employees the full amount of whatever they earn, including tip.

Take a look at Lifehacker’s handy breakdown below to find out which delivery services you can trust with your tips, and read the policy details for each service here.

Delivery Services That Give Tips Directly to Drivers

PostMates
Grubhub/Seamless
Instacart
UberEats

Delivery Services That Keep Drivers’ Tips for Base Payment

DoorDash
Amazon Flex
Caviar

Keep in mind that this is only for companies whose whole business is based on being the go-between for you and your favorite restaurant. If you’re ordering directly from a restaurant, make sure to ask about its own delivery rules, or just tip in cash to be safe.

[h/t Lifehacker]

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