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Scientists at Hebrew University may have found a way to predict earthquakes

Researchers discover the slow, silent process that ignites earthquakes

Photo credit: Canva

Scientists are getting a better understanding on how and when earthquakes occur.

One of the biggest challenges regarding earthquakes is preparation. Aside from recognizing where faultlines lay and determining which areas are the most prone to earthquakes and earthquake damage, there is very little we can do to prepare for the next “big one.” Earthquakes can occur at any time and happen with little to no warning, at least not enough warning for people to seek safety before they hit. Scientists at Hebrew University in Israel may have found a way for us to predict earthquakes in the future.

Through a study done in Israel, Prof. Jay Fineberg and his team of researchers at the Racah Institute of Physics at the Hebrew University of Jerusalem possibly found the causes that lead up to shaking tremors. Through experiments and theoretical models, they theorize that a fault’s geometry along with slow and steady displacement at certain stress points in the Earth’s crust typically precede a seismic rupture that leads to earthquakes.

Richter scaleThis new study could lead into better preparation for earthquakes.Photo credit: Canva

Tremors occur when cracks in the Earth’s crust suddenly give way, and previous studies have shown that slow movements do precede the formation of these cracks. Yet until now, the data of these processes has been relying on two-dimensional generalizations rather than practical or theoretical three-dimensional studies. Fineberg’s team looked into how slow, aseismic stress came into play within earthquake activity, how that stress evolves and nucleates into a budding and sudden tremor.

“Our findings challenge and refine conventional models of rupture dynamics," said Fineberg in a press release. "We show that slow, aseismic processes are a prerequisite for seismic rupture, driven by localized stress and geometric constraints. This has profound implications for understanding when and how earthquakes begin.”

A torn down house and rubble from an earthquakeBeing able to predict an earthquake could help prevent further injuries.Photo credit: Canva

Further testing needs to be made in order to further confirm Fineberg and his team’s conclusions, however this leads to a greater understanding into how earthquakes happen and identify new focal points. Should these solid theories become reality, it could lead to better warnings of earthquakes before they start, leading to better systems to inform the public so they can better prepare before the tremor fully hits.

Meanwhile, if you live near or in an area prone to earthquakes, it’s best to be prepared for the worst. According to experts at the U.S. Geological Survey, if you are caught in the middle of an earthquake, take cover under a heavy desk or table, away from any windows or top-heavy furniture. Stay in place, as most people injured inside a building during an earthquake are those trying to move to a different building or leave their current position. Ready.gov recommends packing an earthquake kit with clothes, water, medication, a first aid kit, a hand-crank flashlight, batteries, cell phone charger, and other such items at the ready in your home or car case you need to leave. There are also apps like MyShake that could give you alerts and other information about earthquakes around your area through your mobile phone, too.

A man and a woman taking shelter under a wooden tableIf you're experiencing an earthquake, hide under a table away from any windows.Photo credit: Canva

It takes time and study to learn how the world around us works, which can take years if not lifetimes before we fully understand it. Even when we get better understanding, it might only provide more prep time for emergencies. Regardless of how much more understanding we obtain about earthquakes, there will always be the need to prepare and to be ready, for ourselves and for our neighbors.

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She fell in love with endangered porpoises at age 7. Now, she's on a mission to save the ocean.

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When Rachel Heimke was seven, she realized what she wanted to do for the rest of her life. Little did she know a $40,000 BigFuture Scholarship would help her pursue her dreams.

Heimke and her parents were living an unconventional lifestyle, to say the least. The summer after she completed first grade, she and her parents boarded a sailboat and sailed from their hometown in Alaska down the Pacific Coast. The family would spend the next two years traveling on the water, passing Mexico and then sailing across the world to Australia before returning home. It was on the sailboat, watching whales and dolphins breach the water under their boat, that Heimke realized her life’s purpose.

“I was really obsessed with these little porpoises called Vaquitta, who only live in one tiny area of water off the coast of Mexico,” she recalled. “When I learned about them as a kid, there were only 22 left in the wild. Now, there are only ten.” Despite her interest, Heimke was never able to actually see any Vaquitta on her trip, both because of their inherent shyness and because they were so critically endangered due to detrimental fishing policies in the area. “That was my wakeup call,” she says. “I’ll probably never be able to see this porpoise, and I don’t want that to be true of other species.”

Now a young woman of 23, Heimke is realizing her childhood dream of ocean conservation by recently graduating with a Bachelor’s degree in ocean sciences and enrolling in a grad program in Canada to study science communication. Heimke is well on her way to achieving her childhood dream—but she acknowledges that none of this would have been possible without her ocean adventures as a child, the support of her parents, and significant financial support.

At 18, when Heimke was deciding where to study ocean sciences, she stumbled upon an opportunity from BigFuture, College Board's free college and career planning site. The opportunity was the BigFuture Scholarship, which provided students the chance to win a $40,000 scholarship by completing six action items on the website. Heimke was intrigued, since she didn’t need to provide an essay, her GPA, or any test scores to enter. Her eligibility was also not tied to citizenship status or family income, so she decided to give it a shot.

“One of the action items was just going on the BigFuture site and creating a list of colleges I was interested in,” said Heimke. Another item required her to apply for financial aid through FAFSA—something Heimke was planning to do anyway. Every completed action item gave students more chances to win the scholarship, so Heimke completed all six action items quickly.

Months later, Heimke’s parents ushered her over to a call over Zoom, where she met a BigFuture representative who had some surprising news: She was one of 25 students who had won the $40,000 BigFuture college scholarship. Each year she would receive $10,000 in scholarship funding, which would cover her entire tuition bill for all four years of schooling.

“That experience taught me that it’s really important to not give up on your goals and just go for opportunities,” said Heimke. “I never thought I would win anything, but I’ve learned it's worth applying anyway. Even a small scholarship of $1,000 can pay your rent for a month,” she said. “And If you write an essay that takes an hour and you win $5,000, that’s probably the most money per hour you’ll ever make in your life.”

The tuition money made it possible for her to attend college, and for her to apply to graduate school immediately afterward without any financial burdens.

“Now that I’m in graduate school and paying for rent and a phone bill and graduate school tuition, it’s truly a blessing to not have student loan debt on top of that,” Heimke said. Because of the BigFuture scholarship, Heimke doesn’t need to pay for her graduate program either—she’s able to fund her education with the money her parents saved by not having to pay for her undergraduate degree.

One of the biggest blessings, Heimke said, was not needing to delay graduate school to work or find extra funds. With climate change worsening, entering the workforce becomes increasingly important over time.

“I’m not sure exactly what I’ll do with my degrees, but I hope to have a lot of different jobs that ultimately will work toward saving our ocean,” she said.

As a child, witnessing marine life up close and personal was life-changing. Heimke’s goal is for future generations to have that experience, as she did.

To learn more and get started, visit bigfuture.org/scholarships.

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Remember when 'Cosmos' host Carl Sagan debunked flat Earthers with a piece of cardboard?

The science doesn't lie.

via YouTube

Over the past few years, there has been a growing number of people who believe the Earth is flat. A recent YouGov survey of more than 8,000 Americans found that as many as one in six are "not entirely certain the world is round."

Maybe there wouldn't be so much scientific illiteracy in this world if we still had Carl Sagan around.

Sagan hosted the original version of TV's "Cosmos" in 1980. It would be revived in 2014 with astrophysicist Neil deGrasse Tyson at the helm.

In the first episode of "Cosmos," Sagan easily proved the Earth was a sphere using a piece of cardboard, some sticks, and the work of an ancient Libyan-Greek scholar, Eratosthenes.

Carl Sagan explains how Eratostenes knows the earth is curvewww.youtube.com

"How could it be, that at the same moment, a stick in Syene would cast no shadow and a stick in Alexandria, 800 km to the north, would cast a very definite shadow? Sagan asked.

"The only answer was that the surface of the Earth is curved," he added. "Not only that but the greater the curvature, the bigger the difference in the length of the shadows."

Considering the distance between the two cities and the lengths of the shadows they produced, Eratosthenes was able to determine that the Earth had a seven-degree curve. He used that calculation to speculate the Earth was 25,000 miles in circumference.

These days we know that the earth is 24,860 in circumference, so Eratosthenes was 140 miles off, not bad for over 2,000 years ago.


This article originally appeared on 7.22.20

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Sorry, Everest. Here's why we can't officially declare you the tallest mountain on Earth.

Measuring a mountain is a lot more complicated than you think.

via Mário Simoes/Flickr

Sunrise on Mount Everest

If you asked people what the tallest mountain on Earth is, most would respond with Mount Everest, which is on the border of Nepal and Tibet. Everest is the highest peak in the Himalayan mountain range, rising 8,849 meters (29,032 feet) above sea level.

Everest is also commonly seen as one of the high points of human conquest. Scaling the mountain and reaching its peak was once known as one of the most significant challenges a human could undertake.

However, according to Joe Hanson, PhD, host of PBS’s “Be Smart,” Everest may not be the tallest mountain on Earth. In a video called “Why No One Can Agree on What's REALLY the Tallest Mountain,” he shows that height is in the eyes of the beholder when it comes to mountains.

Hanson is a science writer, biologist, and educator whose work has been published in WIRED, Nautilus, Scientific American, Texas Monthly, and other publications.

“Everest checks in at 8,848.86 meters tall today. But we still don't really know if that's right. Because on a planet that isn't perfectly round wrapped in a crust that keeps moving, measuring a mountain turns out to be way harder than you think,” Hanson opens the video.

- YouTubeyoutu.be

Hanson says that the title of tallest mountain on Earth has changed more than a few times over the last 300 years. In the 18th century, Mount Chimborazo in Ecuador was considered the tallest, but in 1908, that honor switched to Dhaulagiri in Nepal. Thirty-nine years later, that honor was taken by Kangchenjunga on the border of Nepal and India, until Everest usurped it just five years later.

There are two major problems with definitively ranking the tallest mountains on Earth. First, there is no universally accepted rule on what a mountain is or how one is defined. Second, mountains aren't the massive unchanging things that they appear to be.

What is the tallest mountain on Earth?

If you count the submerged part beneath the water, Hawaii's Mauna Kea is 20% taller than Everest. If you just measure base-to-summit, then Denali in Alaska is the tallest. "Everest only takes the title because most of the time, we measure mountains from sea level," Hanson says.

Everest is considered the tallest mountain because we measure from sea level, but that’s not the most reliable place to start. Due to Earth's gravity and shape, sea level varies across the globe, creating different elevations across the various oceans and seas. Scientists average these variations to create a “mean” sea level, the baseline for measuring mountain heights.



“But these days, the commonly accepted view is to measure a mountain's height above mean sea level. So Everest gets the title of tallest, despite other mountains having pretty strong claims to the throne,” Hanson says. “So, to summit all up, it's pretty easy to figure out where a mountain ends, but not everyone agrees on where a mountain starts. So when it comes to figuring out what's really the tallest mountain, maybe first we should get to the bottom of that.”

The funny thing is that even if Everest is the tallest mountain on Earth, it may not be that way forever; according to Hanson, Nanga Parbat in Pakistan is growing faster than Everest and could eclipse its famous neighbor in the next couple hundred thousand years. So, enjoy your time in the spotlight, Everest. In a few hundred thousand years, you may be downgraded to number two.

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