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Mountain glaciers may hold less ice than previously thought – here’s what that means for 2 billion downstream water users and sea level rise

Mountain glaciers are essential water sources for nearly a quarter of the global population. But figuring out just how much ice they hold – and how much water will be available as glaciers shrink in a warming world – has been notoriously difficult.

In a new study, scientists mapped the speed of over 200,000 glaciers to get closer to an answer. They discovered that widely used estimates of glacier ice volume may be off by about 20% in terms of how much Earth’s glaciers outside the Greenland and Antarctic ice sheets could contribute to sea level rise.

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What is earwax?

Imagine you’re watching TV. Suddenly, your ear feels a little itchy. You stick your pinky finger in there and dig around a bit. You pull it out and stare at the little brownish blob on the tip of your finger.

That’s earwax. This kind of waxy ear booger has plagued people for centuries. Tools to remove earwax from thousands of years ago have been discovered in ancient Roman and at Viking archaeological sites. But if you could snap your fingers and suddenly wish away all the earwax in the world, it might not be as great as you imagine.

I’m a pediatric otolaryngologist – otherwise known as an ear, nose and throat doctor for children. I work at Seattle Children’s Hospital and mainly see kids who have problems with their ears. Sometimes I encounter a patient who has something in their ear that shouldn’t be there – insects, gummy worms and beautiful gemstone beads are some of my personal favorites that I’ve removed. But what I see all the time is a lot of earwax.

Your ear canal is lined with skin cells, as well as different glands that release various substances into the canal. Earwax is produced in your ear canal and is basically a mix of skin cells, sweat and fatty oils. These things mix together to form small – or sometimes rather big – globs of golden-brown gunk.

cross-section diagram of the human ear system

Earwax is found in the outer part of your ear, in the ear canal.

Ace2020/iStock via Getty Images Plus

Everyone’s earwax is unique. Some is more pasty, some is dry, some is yellow, brown or black. Scientists have figured out a gene that seems to calibrate how wet or dry your wax is. So, if your wax is really pasty and stinky, it’s another thing you can blame on your parents.

While you might think it is just a nuisance, earwax actually plays some important roles. It helps keep the skin in your ear healthy and moist, and doctors think it may protect the ear canal from infections. If there were no earwax in the world, your ears would feel dry and itchy. You would probably scratch at them constantly and get ear canal infections more frequently.

But maybe you’re convinced a buildup of earwax is making your ears itch – not to mention preventing you from hearing when you’re called to dinner. In that case, is it better to get it out of there?

Many people are tempted to stick something in their ears to try to get wax out and give the ear a nice little scratch. The problem is that while you might get a little wax out, you’re probably pushing more in than you’re extracting. If you keep pushing more and more in, sooner or later your ear canal will be packed and overflowing with waxy goodness.

little girl poking her finger in her ear

Don’t be hard on your earwax – it’s actually doing an important job.

kool99/E+ via Getty Images

So what is the best way to remove it? Believe it or not, on its own the ear canal naturally pushes earwax out of your ear. As skin grows in the ear canal, it forms a natural conveyor belt for the earwax. In general, it should slowly migrate to the outside of your ear canal and just fall out when you run around or bathe. When you chew, your jaw movement also seems to help wax come out of your ear.

This is a natural process and a long journey to freedom for those little ear boogers. They want to get out of your ear canal, too, so don’t push them back in by sticking a Q-tip in your ear. Some people mistakenly think lighting a candle by your ear is a great way create a vacuum and suck wax out of your ear. It isn’t – research shows that it doesn’t actually work, so please don’t light any fires next to your head.

Sometimes it can help to use different types of ear drops to soften up wax and help it come out on its own. There are some drops you can buy at the store, and some simple products like mineral oil that can also do the trick. If your ear gets too full of wax, you might need to see your doctor to have it carefully cleaned out. Don’t try this at home!

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Ocean heat waves trigger ‘squid bloom’ along Pacific coast, scientists say

SEATTLE — Marine heat waves driven by climate change have fueled a dramatic increase in market squid along the Washington and Oregon coast over the past two decades, new research shows. Market squid from central California to northern Washington saw a fivefold increase over the past 22 years, according to a report published by the American Fisheries Society last month. But the largest swells were seen in Washington and Oregon, where models showed each state respectively saw a 39-fold and 25-fold increase in population density of squid during the examined time frame. It’s not clear yet whether ...

The dark triad: Inside the psychology of trophy hunting -- and why some people kill animals for sport


Do you have any desire to stalk and kill an elephant? Probably not, but some relish the idea.

Recently the world’s largest trophy hunting convention took place in Las Vegas, organised by Safari Club International, an influential US-based hunting lobby group. Attendees bid in an auction on a trip to hunt and shoot polar bears, with some of the funds raised earmarked to fight UK government plans to ban hunting trophies.

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150 years ago, Charles Darwin wrote about how expressions evolved – pre-empting modern psychology by a century

Was Charles Darwin a one-hit wonder? According to scientists who take a gene’s-eye view of evolution, the 19th-century English naturalist contributed one crucial idea to understanding how species change: natural selection, or “design without a designer”.

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Ready for another pandemic malady? It’s called ‘decision fatigue’

Most all of us have felt the exhaustion of pandemic-era decision-making. Should I travel to see an elderly relative? Can I see my friends and, if so, is inside OK? Mask or no mask? Test or no test? What day? Which brand? Is it safe to send my child to day care? Questions that once felt trivial have come to bear the moral weight of a life-or-death choice. So it might help to know (as you’re tossing and turning over whether to cancel your non-refundable vacation) that your struggle has a name: decision fatigue. In 2004, psychologist Barry Schwartz wrote an influential book, “The Paradox of Choic...

Beijing’s scant snow offers a glimpse at the uncertainty — and risks — of future Winter Olympics

The postcards and posters from most Winter Olympics call attention to the thick powder and ice-covered mountains we expect from winter mountain sports. But this year will be a little different.

A poster of the Olympic bobsled run in Lake Placid.

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The psychological reason why so many fall for the 'Big Lie'

Contrary to popular belief, there is no evidence that Nazi propaganda chief Joseph Goebbels coined the term "Big Lie." According to the supposed quote, Goebbels said that if you tell "a lie big enough" and regularly repeat it, "people will eventually come to believe it." That said, Adolf Hitler actually did use the phrase "big lie" — but not to describe his own propaganda strategy. In a darkly ironic case of psychological projection, he came up with the expression to defame the Jewish community.

"In the big lie there is always a certain force of credibility," Hitler wrote in "Mein Kampf," his 1925 autobiographical manifesto. He observed that most people are only comfortable telling small lies, and imagined others would be as uncomfortable as themselves perpetuating big ones. "It would never come into their heads to fabricate colossal untruths, and they would not believe that others could have the impudence to distort the truth so infamously," Hitler explained. "Even though the facts which prove this to be so may be brought clearly to their minds, they will still doubt and waver and will continue to think that there may be some other explanation."

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Study provides first evidence of a causal link between perceived moral division and support for authoritarian leaders

New research indicates that heightened perceptions of moral division intensify support for strong leaders. The study, published in Political Psychology, found that the perceived breakdown of society plays a key role in this relationship. “I think increasingly we are seeing societal divisions play out on moral grounds,” said study author Charlie R. Crimston (@drCharlie_C), a research fellow at the University of Queensland. “We know that when our moral convictions clash things can become pretty toxic (e.g., we become highly emotional, intolerant, and more accepting of violence to achieve desired...

Why are people calling Bitcoin a religion?

Read enough about Bitcoin, and you’ll inevitably come across people who refer to the cryptocurrency as a religion.

Bloomberg’s Lorcan Roche Kelly called Bitcoin “the first true religion of the 21st century.” Bitcoin promoter Hass McCook has taken to calling himself “The Friar” and wrote a series of Medium pieces comparing Bitcoin to a religion. There is a Church of Bitcoin, founded in 2017, that explicitly calls legendary Bitcoin creator Satoshi Nakamoto its “prophet.”

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Why are we seeing more northern lights this year?

Solar cycle 25 is kicking off in style. Our sun has a cycle of activity and as it becomes more active, there will be more sightings of the northern (and southern) lights. That is what is happening this winter.

As well as emitting sunlight, our sun has an expanding atmosphere made of charged particles and magnetic fields. This high-speed solar wind blows over the Earth, but the Earth has its own magnetic field (imagine a large bar magnet with its poles roughly aligned with geographic north and south) and this can deflect the solar wind. This magnetic barrier is weakest at the poles of the “bar magnet” so that we tend to see auroral displays at high latitudes. The bigger the space weather storm, the deeper charged particles can penetrate the magnetic field of the Earth, so that during intense events, the northern lights are seen at lower latitudes.

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Why monkeys attack sick members of their troop – and don’t socially distance at all

Life in the wild can be tough, and sometimes animals don’t have the luxury of taking time out when they are sick. That’s certainly the reality of life for vervet monkeys living in Southern Africa, even though parasites and viruses are an ever-present component of animal life.

We know how people respond to infection. Loss of appetite and staying in bed or resting are some of the ways we adapt to being unwell. Being less active and eating less frees up energy to fight the infection – even digesting food uses energy. This behavior may help us recover and is a key component of our survival.

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