Recycling Your Yogurt Container the Right Way Is a Surprisingly Difficult Task

iStock.com/alexialex
iStock.com/alexialex

Unlike paper and glass, items made of plastic can sometimes be tricky to recycle. In many cases, plastic water bottles should be thrown in the recycling bin intact (not crushed) with the cap left on—but then again, the rules and regulations vary from one recycling center to the next.

Yogurt cups have their own set of challenges, too. According to Lifehacker, many of these containers are made of a polymer plastic called polypropylene (a #5 plastic), which isn’t always accepted by curbside collection programs.

So what should you do with those cups after you’re done enjoying your vanilla Greek yogurt? You can find out what type of plastic the cup is made of by looking at the symbol on the bottom, which contains a number inside of a triangle. For example, Chobani and Yoplait containers are usually made of #5 plastic, which means polypropylene. You can then look up your local recycling program’s rules online to see if that type of plastic is accepted. (In New York City, for example, #5 plastics are accepted.)

If all else fails but you still want to do your part for the environment, you can drop them off at your local Whole Foods, which often participates in a recycling takeback program called Gimme 5 (but call first, since not all locations participate). Alternatively, you can mail them to the Gimme 5 center in Cortland, New York, or use the Recycle More Plastic map to find the closest collection program that’s willing to accept your discarded yogurt cups. Yes, it takes a bit of effort, but it's worth it to make sure that your used container ends up in the right place.

[h/t Lifehacker]

5 Ways You Can Help the Jaguar Rescue Center Save Costa Rica’s Wildlife

A curious sloth says hello after members of the Jaguar Rescue Center reunited her with her baby.
A curious sloth says hello after members of the Jaguar Rescue Center reunited her with her baby.
Jaguar Rescue Center

In 2005, Catalonian primatologist Encar Garcia and her husband, Italian herpetologist Sandro Alviani, were living in southwestern Costa Rica when locals began to bring them injured animals in hopes that the two experts could save them. As word spread and more animals arrived, their property slowly transformed into a full-fledged rescue center. So they purchased the surrounding land and named their new organization the Jaguar Rescue Center (JRC), after one of their early rescues: a young, orphaned jaguar whose mother had been killed by farmers.

Today, the center covers nearly 5.5 acres of land near Puerto Viejo de Talamanca in Costa Rica’s Limón province. It can accommodate around 160 animals at a time, and is home to everything from spider monkeys to sea turtles (though, by law, staff members aren’t allowed to accept domesticated animals like cats and dogs).

While locals still bring injured and orphaned animals to the JRC, others are brought by tourists, the Ministry of Environment and Energy, the National Animal Health Service, and even the police, who confiscate animals that have been poached or illegally kept as pets.

howler monkey at jaguar rescue center
Skye, a young howler monkey who recovered from electrocution.
Jaguar Rescue Center

The rescues are often victims of road accidents, animal attacks, environmental destruction, human interaction, or electrocution from exposed power lines. After the animals are rehabilitated, they’re released into La Ceiba Natural Reserve, a human-free (except for JRC workers) part of the forest where they can safely reacclimate to living in the wild. The JRC has cameras installed in the area to monitor the animals after their release and make sure they’re finding enough food.

Unfortunately, not all the creatures brought to the JRC recover from their injuries—in 2019, for example, 311 of the 749 rescues died [PDF]—so JRC staff members and volunteers understand just how remarkable it is to watch an animal regain its health and be successfully returned to its natural environment.

“There are so many amazing things about working for the JRC, but I think we all can agree that seeing a rescued animal make it through rehabilitation and be released is the best and most rewarding part of the job,” Torey, a JRC tour guide, tells Mental Floss.

Some thought-to-be-orphaned sloths are even released right back into the arms of their mothers. After recording the cries of a baby sloth, JRC staff will take the sloth back to wherever it was first found, play the recording, and wait for the mother to recognize the cries and (slowly) climb down from her leafy abode to reunite with her child.

Despite its partnerships with government agencies, the JRC doesn’t receive government funding. Instead, it relies on public donations and revenue from its visitor services. Find out more about how you can help below.

1. Donate money.

You can make a one-time or monthly donation that will go toward food, medical care, and supplies for the animals, or you can donate specifically to the JRC’s “Shock Free Zone” program, which insulates power lines and transformers that run through forests to prevent them from electrocuting wildlife.

2. Donate items.

Check out the JRC’s Amazon wish list to see which items are most needed—and what they’ll be used for, too. Examples include Pampers diapers for baby monkeys, snake hooks for safely rescuing snakes, and cans of worms to feed birds, opossums, and bats.

One of the most important products on the list is powdered goat’s milk, which staff members use to feed orphans of many mammalian species at the JRC.

“It has the most universally digestible enzyme compared to other milk,” Torey says. “Unfortunately, we do not have sloth milk, monkey milk, etc. readily available for the baby animals.”

3. “Adopt” an animal.

diavolino, a margay at the jaguar rescue center
Diavolino, the Jaguar Rescue Center's "feisty little margay."
Jaguar Rescue Center

For $105, you can virtually “adopt” an animal at the JRC. Choices range from Diavolino, a “feisty little margay” rescued from the illegal pet trade, to Floqui, a whitish two-fingered sloth who was born with only one digit on each hand and foot.

4. Visit the Jaguar Rescue Center.

You can stay overnight at the JRC in one of its three visitor residences—La Ceiba House, Ilán Ilán House, or one of the Jaguar Inn bungalows—which offer a variety of amenities, restaurant service, and access to nearby beaches.

Whether or not you’re staying there, you can book a tour of the JRC, where you’ll get to explore the premises and even meet some of the animals. There are private, public, nighttime, and VIP tours, and you can find out more here.

5. Volunteer at the Jaguar Rescue Center.

If you’re looking for a more hands-on, potentially life-changing way to help Costa Rica’s wildlife, you can apply for the JRC’s four-week volunteer program or a position at La Ceiba Natural Reserve that lasts three to six months.

According to the website, JRC volunteers are housed in the Jaguar Inn and help with “a broad range of tasks, from doing the dishes and cleaning up after the animals ... to building and remodeling enclosures, or babysitting a new arrival to ease the stress of their new environment.”

La Ceiba volunteers, on the other hand, stay right on the reserve and do everything from monitoring captive and recently released animals to keeping the trails clear.

Find out more about becoming a volunteer here.

25 Cool Facts About Polar Bears

JohnPitcher/iStock via Getty Images
JohnPitcher/iStock via Getty Images

From starring in Coca-Cola ads to becoming the poster child for climate change, the polar bear is quite the high-profile species. Ursus maritimus is a fascinating animal that roams across the Arctic Circle through Norway, Russia, Canada, Greenland, and Alaska, and there's more to them than the adorable faces you see in children's books and advertisements. In honor of International Polar Bear Day, which takes place on February 27, here are 25 things you should know about the fascinating animal.

1. They're the largest carnivores on land.

Three polar bears
JohnPitcher/iStock via Getty Images

Polar bears can weigh more than 1300 pounds and span more than 8 feet, 6 inches from nose to tail, making them the largest carnivores to currently walk the Earth. (Though other bears can grow larger, like Alaska's 10-foot-long Kodiak bear, they're omnivorous, while polar bears prefer an all-meat diet.) The males far outweigh their female counterparts, who may only weigh between 330 and 650 pounds. In general, though, a bear's weight fluctuates significantly throughout the year, with some bears packing on 50 percent more body weight over the course of a successful hunting season, then losing it over the course of their long fasting months.

2. But technically, they're marine mammals.

Three polar bears sleeping together.
JohnPitcher/iStock via Getty Images

Because they spend so much of their lives on ice, rather than land, polar bears are the only bears to be considered marine mammals. They hunt, court, and mate out on the ice, spending many months of the year far from land.

3. They're higher on the food chain than we are.

Polar bear roaring.
photohomepage/iStock via Getty Images

Human beings aren't as high on the global food chain as you might think. Polar bears don't have any natural predators, and their intensely carnivorous diet puts them at the top of the food chain with species like killer whales, according to researchers, while humans fall somewhere closer to the middle. Don't worry too much about getting eaten by one, though—a 2017 study found that during the past 144 years, there have only been 20 fatal polar bear attacks in all of the five countries that have polar bear populations. However, as food becomes more scarce for the bears, humans living in polar territory may soon face more risk from starving bears.

4. They're loners ...

A polar bear picture.
gnagel/iStock via Getty Images

Other than the two to three years a cub spends with its mother, polar bears are pretty much solitary creatures. Adults spend only a few days a year mating, then go on their own way, spreading out to hunt on their own. They rely on the scent left by the sweat glands on their paws to track other bears, using the smell to sense where potential mates might be headed, among other things.

5. ... but are sometimes willing to share.

A polar bear sleeps cuddled next to her cub.
Paul J. Richards, AFP/Getty Images

Polar bears can play nice with each other sometimes. On occasion, they will hang out together in large groups, especially if there's a big meal that multiple bears can take part in, like a whale carcass. When they do spend time together (in what's called a sleuth), male bears will play-fight with each other, wrestling and swatting at each other without doing any real harm. According to the documentary Polar Bears: Spy on the Ice, polar bears can recognize friends they've met before even if they go without seeing each other for many years.

6. They're picky eaters.

A picture of a polar bear.
UrmasPhotoCom/iStock via Getty Images

When food is plentiful, polar bears are very selective about what they eat. They hunt seals, but if there are plenty available to hunt, they won't eat their whole catch. Instead, they'll only eat the energy-rich blubber (up to 100 pounds at a time), leaving the rest of the carcass for other animals to scavenge. When hunting is good, their diet is made up of about 90 to 95 percent fat. When times are lean, though, they'll happily branch out, eating reindeer, rodents, eggs, seaweed, and anything else they can get their claws on. However, because their bodies are so much better at digesting fat than protein, researchers think that if Arctic ice continues to melt and polar bears become unable access the ice (with its blubber-rich seals), they won't be able to get enough calories on land to survive [PDF].

7. They spend a lot of time fasting.

An adorable baby polar bear.
AndreAnita/iStock via Getty Images

When they're not out on the ice scoping out seals, polar bears spend an incredible amount of time fasting. The female polar bears fast longer than any other mammal species—in Canada's Hudson Bay, pregnant polar bears can fast up to 240 days, or almost eight months. There's reason to think they'll be fasting even longer in the future as sea ice melts, leaving bears with fewer hunting opportunities and less time to accumulate the fat stores needed to get through the lean months. During the 1980s, non-pregnant polar bears spent 120 days fasting between hunting seasons, but researchers now think that the bears will have to go without food longer and longer, fasting for as much as 180 days at a time in the future.

8. They will travel far to find dinner.

A polar bear swimming underwater.
fotokon/iStock via Getty Images

The average bear might travel across 100,000 square miles in its lifetime, and that number may be getting higher. In 2013, a bear searcher told the BBC that polar bears were spending 9 to 13 percent more time being active to make up for the fact that the ice they hunt on is drifting faster, leaving them walking on a "treadmill" just to stay within their territory. One bear tracked by the WWF traveled almost 2300 miles from Norway to Russia in less than a year. Due to receding ice, polar bears have to walk farther to find prey, wasting valuable energy. The energy they gain from eating a single ringed seal might not even make up for what they expend trying to find and catch it.

9. They can swim for days.

A big polar bear paw.
Michael_Dodd/iStock via Getty Images

Polar bears are savvy swimmers, paddling at an average speed of 6 miles per hour. And it's a good thing: Due to all that melting ice, polar bears are putting their swimming skills to lengthy use. In 2011, a study reported that a tagged female polar bear swam a total of 426 miles in one nine-day stretch across the Beaufort Sea above Alaska, losing 22 percent of her body weight in the process. Another bear in the study swam for 12 days, though she at least stopped to take some breaks.

10. They get hot fast.

A polar bear putting its face in its paw.
CaraMaria/iStock via Getty Images

You'd think with all that plunging in Arctic waters, polar bears might get chilly occasionally. But since they're built to withstand extreme cold on a regular basis, they actually have the opposite problem: They overheat very easily, and are more likely to die from the heat than the cold. Their two layers of fur and solid layer of body fat (up to 4.5 inches thick) keep their metabolic rate consistent when temperatures reach as low as -34° F. They can sprint up to 30 miles per hour if need be, but much like you wouldn't want to run a race in a heavy ski jacket, polar bears can't spend much time chasing after their prey lest they overheat—a bear's body temperature can rise to feverish temps if they move too fast. On land, they typically only walk at speeds of three miles an hour, and their main hunting technique involves staying very still for hours or days at a time, waiting for a seal to emerge from the ice to breathe.

11. They've been getting it on with grizzlies.

Baby polar bear.
GlobalP/iStock via Getty Images

In addition to changing their travel patterns and dinner prospects, climate change is altering polar bears' love lives. As the ice-traversing bears are forced to spend more time on the tundra, their habitats are starting to overlap with those of grizzly bears. In some places, the two species are getting more comfortable with each other, with amorous results. In Alaska and western Canada, grizzlies and polar bears are doing more cross-breeding, creating hybrid offspring.

12. They grow a lot in their first few months.

A baby polar bear waving at the camera.
AndreAnita/iStock via Getty Images

At birth, polar bears weigh anywhere from 16 to 24 ounces—about what a guinea pig does. As newborns, they're blind, toothless, and only about a foot long. But by the time they emerge from their den for the first time around four months later, they are substantially larger, weighing between 22 and 33 pounds. In addition to nursing, they'll begin eating solid food around that time, and by 8 months old, they'll weigh 100 pounds or more.

13. They have huge feet.

Polar bear
Alexey_Seafarer/iStock via Getty Images

In order to balance on ice, polar bears boast giant feet. Their paws can measure up to 12 inches in diameter, acting like snowshoes to spread out their weight on thin ice and deep snow. The bumpy papillae (like the ones on your tongue) on their footpads help grip the ice, keeping them from sliding around. They also have long, curved claws that can measure almost 4 inches—all the better to grab onto slippery seals.

14. They don't hibernate.

A polar bear jumping into water.
zanskar/iStock via Getty Images

While black bears, grizzlies, and other bear species spend each winter denning, forgoing eating, drinking, moving, pooping, and peeing for months on end, polar bears stay active all winter. Polar bears don't need to sleep through the winter, though, because there's plenty of food available to them in the coldest months, when they take to the sea ice to hunt for seals. The only exception is during pregnancy, when a female polar bear digs herself a den and remains sealed inside, surviving off her stores of fat, until her cubs grow large enough to survive outdoors.

15. They love to nap during snowstorms.

A polar bear on the rocks.
travelling-footprint/iStock via Getty Images

Polar bears may not hibernate, but they are happy to lay low when bad weather hits. During the winter, they dig themselves into shallow pits in the snow to protect themselves from wind, sometimes remaining there for days as the snow piles up on top of them like a warm blanket. Sometimes, they take a similar approach to staying cool, digging through the tundra down to the permafrost during the summer to keep from overheating.

16. They're very hard to track.

A polar bear wears a tracking collar.
Paul J. Richards, AFP/Getty Images

Considering how far they travel—both walking and swimming—over a given year, you can imagine how hard it is for scientists to track polar bears. By nature, they spend a huge amount of time alone in remote locations. Scientists use boats, helicopters, and low-flying planes to observe them, but that only works in good weather and in certain locations. So recently, they've turned to satellites, fitting bears with non-invasive radio collars and tracking them through high-resolution satellite imagery. It's cheaper than sending out a helicopter, and it lets researchers identify bears even in the most remote areas of the Arctic.

17. Their nostrils close while they swim.

A polar bear drinking water.
robert mcgillivray/iStock via Getty Images

Polar bears don't have to worry about getting water up their nose. When they swim, their nostrils close to prevent them from breathing in water. They can swim at depths up to 15 feet, and while they typically only dive for a few seconds, they can hold their breath for more than two minutes, enabling them to sneak up on seals resting on ice floes. In 2015, scientists reported observing a record-breaking polar bear dive that totaled 3 minutes and 10 seconds. The hungry bear stalked three seals from afar, swimming almost 150 feet underwater without surfacing for a breath or to reorient himself to the seals' location before bursting out of the water where one of the seals was resting. (Sadly, his prey got away.)

18. They can turn green in captivity.

A polar bear in a zoo swims with a ball.
Ina Fassbender, AFP/Getty Images

Though polar bears are sometimes known as the white bear, they aren't white. Their hair is colorless and hollow, and only appears white because of the way light scatters through their fur. (Under that mass of hair, their skin is as black as their noses.) When bears are subject to warmer temperatures in captivity, though, they can take on a bit of a verdant hue. Algae infestations can turn polar bears green, and not just on the outer layer of their fur. The colorful algae grows inside the hollow tube of each hair. This green growth thrives in humid climates, like Singapore, where the bears don't naturally live.

19. They'll never meet a penguin.

A Bulgarian stamp set featuring a polar bear, a seal, penguins, and a walrus.
State Agency for Information Technology and Communications of Bulgaria, Wikimedia Commons // CC BY 2.5

Though you might see polar bears and penguins together in Coca-Cola ads or on winter-themed pajamas, the two species never mix in real life. They live at opposite ends of the Earth, though they both spend their days in icy waters. Polar bears exclusively inhabit the Arctic, and penguins only live in the Southern Hemisphere. The closest they ever get is when they live in the same zoo.

20. At one zoo, they poop glitter.

A polar bear looking around.
Mike_Kolesnikov/iStock via Getty Images

At the Assiniboine Park Zoo in Winnipeg, Canada, the polar bears have sparkly poop. In 2014, zookeepers began feeding each of their bears a different color of non-toxic glitter so that they could trace their bowel movements, analyzing the samples to identify health issues, track stress hormones, and generally see how the bears are dealing with zoo life. The colors help the zookeepers label which poop comes from which bear.

21. Europeans have kept them in captivity since the 13th century.

A 1938, black-and-white photo of a polar bear lying on its back in a zoo
Topical Press Agency/Getty Images

Captive polar bears have piqued public curiosity since as early as the Middle Ages, when the bears were occasionally given to European royalty by Viking traders. In the 1200s, when Henry III kept one in London, it was muzzled and chained but allowed to catch fish and swim in the Thames River. In the 17th century, Frederick I of Prussia kept a defanged and declawed polar bear, staging public fights between it and other large mammals for public amusement.

22. Posing with them was once a popular German pastime.

Two polar bears playing.
Cheryl Ramalho/iStock via Getty Images

In the early 20th century, getting a picture with a man dressed in a polar bear suit was a fairly standard activity in Germany, at least according to the many photos found by French photo collector Jeann-Marie Donat. Donat spent 20 years tracking down the vintage photos, taken between 1920 and 1960, for his 2016 book Teddybär. There are several potential explanations for why so many Germans elected to stop for photos with people in polar bear suits (or to dress up as polar bears themselves). Donat suggests that it might trace back to the popularity of the two polar bears that arrived at the Berlin Zoo in the 1920s, while Hyperallergic notes that the costume was created as a Fanta advertising stunt, designed to distract Germans from the horrors of World War II. The photos show people young and old posing next to bears at the beach, in parks, in the street, in the summer and winter, alone and in groups. They all look delighted to get a chance at a polar-bear souvenir.

23. They can be ... polarizing.

Knut and his handler pose for photos lying down on their bellies.
John Macdougall, AFP/Getty Images

Knut, a polar bear cub born at the Berlin Zoological Garden in 2006, was hand-raised by zookeepers after being abandoned by his mother at birth. The cute cub became an instant tourist attraction—the most famous bear in the world, even—and the zoo's attendance rates skyrocketed, netting an extra $1.35 million in tickets when the bear began making twice-a-day public appearances.

But not everyone was psyched about "Knutmania." The young bear's popularity proved to be controversial for animal rights organizations like PETA, whose German spokesperson Frank Albrecht said the zoo should have let the orphaned Knut die rather than continue hand-feeding him, a process that he called a "gross violation of animal protection laws." In 2007, the bear received an anonymous, handwritten death threat from a hater who simply wrote "Knut is dead! Thursday midday." The zoo took the fax seriously enough to assign triple the amount of zookeepers keeping watch over the polar bear during his daily public romp. (Knut continued to live at the Berlin zoo until his death at age 4 from an autoimmune disease.)

24. They sometimes get the celebrity treatment.

Photographers crowd in front of a barrier to photograph Knut at a zoo.
John Macdougall, AFP/Getty Images

In 2007, celebrity photographer Annie Leibovitz photographed Knut for the cover of Vanity Fair's annual "Green" issue. While Knut appeared solo on the cover of the German edition, he was Photoshopped into an image with Leonardo DiCaprio for the American edition. After his death, the Berlin zoo erected a bronze statue in his honor, and his body was preserved for display at the city’s natural history museum.

25. Churchill, Canada has a unique way of living with them.

A green sign in a snowy field reads 'Polar Bear Alert: Stop.'
Paul J. Richards, AFP/Getty Images

Churchill, a town in Manitoba, Canada on the shores of the Hudson Bay, is known as the polar bear capital of the world. During the fall, hundreds of polar bears pass through on their way to their icy hunting grounds on the bay, waiting nearby as the ice hardens for the winter. The locals have adopted unique ways of living with the hungry bears. Many don't lock their doors, so that if someone is running away from a polar bear, they can duck into any doorway. Since Halloween falls right in the middle of polar bear season in town, city employees, police officers, volunteer fire officials, and polar bear conservationists stay on patrol to drive away any bears that might be tempted to go trick-or-treating themselves, using helicopters, sirens, air horns, rubber bullets, and more to keep the bears at bay. Kids, for their part, aren't allowed to wear anything white for the evening.

Churchill also runs a "polar bear jail" for bears that continue to wander into town. Residents are encouraged to call the Polar Bear Alert Program hotline year-round if they see a bear in town, and conservation officers will come and try to scare it away. If shooting loud scare rounds at the bear doesn't do the trick, they trap the bear, or, if all else fails, hit it with a tranquilizer dart and take it to the Polar Bear Holding Facility. The specially-designed compound can hold up to 30 bears and is meant to keep bears that are aggressive or persistently return to the community. When the bay freezes, these bears are transported by helicopter or vehicle onto the ice, where they resume their normal winter hunting routine. With warmer temperatures keeping bears off the ice for longer and longer periods, more towns may soon have to learn from Churchill's strategies for peaceful coexistence.

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