Atmospheric Rivers

Scientists at UC Santa Barbara found that atmospheric rivers in both hemispheres have moved approximately 6° to 10° closer to the poles over the past 40 years. This means that the areas affected by atmospheric rivers are farther north in the Northern Hemisphere and farther south in the Southern Hemisphere than they used to be.

The researchers explain that an underlying cause of the shift is cooling in the eastern tropical Pacific over the past four decades, although they note that the chain of events “remains to be fully explored.”

Atmospheric rivers are flowing streams of water vapor in Earth’s atmosphere that have a major impact on levels of rain and snow. They can vary widely in size and intensity, but the average one can convey the same amount of water vapor as the water flow at the mouth of the Mississippi River.

One of the famous is known as the "Pineapple Express", a strong atmospheric river that delivers moisture from the tropical Pacific around Hawai'i towards the west coast of the US and Canada. When this band of balmy, moist air reaches the West Coast, it can cause significant downpours across California, as well as Oregon, Washington, and British Columbia.         READ MORE...

The Great Pyramid's Latitude

Spend long enough on the Internet and you will likely be met with a post informing you that the speed of light is 299,792,458 meters per second, and the latitude of the Great Pyramid of Giza is 29.9792458°N, before inviting you to assess whether this is a coincidence or not.

But is it true, and if so, is it a coincidence?

The answer to the first question is yes. Light travels at 299,792,458 meters per second in a vacuum, the absolute speed limit of the universe. The latitude of the Great Pyramid of Giza is indeed 29.9792458 N – but so are a whole bunch of other places at the same latitude.  READ MORE...

Spark Plug of Nuclear Fusion

Nuclear fusion is what powers stars, the most common source of energy in the universe. And yet, we can’t easily recreate it here on Earth because we cannot compress hydrogen in the same way that gravity does in the core of stars. To bypass that requirement, the inertial fusion approach uses lasers to compress a pellet of fuel so much that it ignites.

The NIF uses an indirect method. Their system has some of the most powerful lasers in the world hitting a container called a hohlraum, getting converted to x-rays. It’s the x-rays that then compress the pellet of fuel and release energy. The method presented in new research from scientists at the University of Rochester approached fusion by directly slamming the pellet of fuel with lasers.  READ MORE...

Einstein's Discoveries Lead to Gravitational Laser

Einstein’s work was crucial for the current understanding of gravitational waves and the development of stimulated radiation that culminated in the invention of lasers. Dr Jing Liu, from the University of Chinese Academy of Sciences, has combined the two into an intriguing proposal: it is possible to create the gravitational equivalent of a laser.

Let’s start with the basics. The word laser stands for Light Amplification by Stimulated Emission of Radiation. A laser is made of light all with roughly the same frequency (or, in other words, it is monochrome) and it is coherent, so it can be focused to a tight spot or can be used to create ultrashort pulses. By stimulating a quantum mechanical energy transition, it is possible to get light out all with the same frequency.

Natural lasers exist and they are called masers – with the "m" standing for microwaves. These astrophysical masers come from a bunch of sources, including comets, stellar atmosphere, and even the aurorae of Jupiter. So if light can make a laser, could gravity as well?   READ MORE...

Astronauts to Experience Time Dilation

When astronauts head to Mars, they will experience time dilation. That's to be expected. In fact, your feet and your head experience time dilation, with your head aging ever so slightly faster than your feet. But how much time dilation will they experience (relative to Earth observers)?

First off, let's check we're all on the same page. Time passes at different rates for different observers, depending on their relative speeds, and their proximity to (and strength of) nearby gravitational fields. Time dilation is the difference between time elapsed on two clocks due to these causes, as described by special relativity and general relativity.

Gravity curves spacetime. The result is that the stronger gravity is near you, and the closer you are to the mass creating it, the slower time moves (from the standpoint of an observer, or whoever has the second clock. From your perspective, time ran at the usual speed). This is how your foot is younger than your old (relatively speaking) haggard head.  READ MORE...

Lithium Reserve Under US Volcano

The planet’s largest-known lithium deposit may have been found hiding beneath an ancient super volcano along the Nevada–Oregon border in the US. Given the skyrocketing demand for lithium, this deposit could be a treasure trove – although obtaining it could come with a bunch of challenges and dangers.

An estimated 20 to 40 million metric tons of lithium is thought to be contained within sediments of the McDermitt caldera, a caldron-like depression that formed as a result of the volcano erupting and then collapsing on itself. The caldera is found in southeastern Oregon and northern Nevada, taking up a vast portion of land around 45 kilometers (28 miles) long and 35 kilometers (22 miles) wide.

If this estimate is correct, it would mean the McDermitt caldera holds the record for the biggest lithium deposition in the world, beating Bolivia's salt flats, which hold around 23 million tons.

“If you believe their back-of-the-envelope estimation, this is a very, very significant deposit of lithium,’ Anouk Borst, a geologist at KU Leuven University and the Royal Museum for Central Africa in Tervuren, Belgium, told Chemistry World.     READ MORE...

Living In a Computer Simulation

Physicists have long struggled to explain why the universe started out with conditions suitable for life to evolve. Why do the physical laws and constants take the very specific values that allow stars, planets and ultimately life to develop? The expansive force of the universe, dark energy, for example, is much weaker than theory suggests it should be – allowing matter to clump together rather than being ripped apart.

A common answer is that we live in an infinite multiverse of universes, so we shouldn’t be surprised that at least one universe has turned out as ours. But another is that our universe is a computer simulation, with someone (perhaps an advanced alien species) fine-tuning the conditions.

The latter option is supported by a branch of science called information physics, which suggests that space-time and matter are not fundamental phenomena. Instead, the physical reality is fundamentally made up of bits of information, from which our experience of space-time emerges. By comparison, temperature “emerges” from the collective movement of atoms. No single atom fundamentally has temperature.  READ MORE...

Pyramid NOT MADE by Humans

Last month, a study published in Archaeological Prospection garnered a lot of media attention (including from IFLScience) for its extraordinary claim that a mountain in Indonesia is actually the world's oldest pyramid built by ancient humans. But reactions from archaeologists since have raised skepticism about its bold conclusions.

According to the paper, the Gunung Padang – which translates to “Mountain of Enlightenment” – was not formed naturally but "meticulously sculpted" into its current shape between 25,000 and 14,000 years ago. If this were true, it would be considerably older than the world's oldest pyramids, with the team writing that it “suggests that advanced construction practices were already present when agriculture had, perhaps, not yet been invented.”

Among other bold claims was that there are "hidden cavities or chambers" at the site, and that the site itself appeared to have been buried several times “possibly to conceal its true identity for preservation purposes”.

Extraordinary claims require extraordinary evidence, and other archaeologists are far from convinced that the team has provided this, especially given how it would rewrite the history of human development. Lutfi Yondri, an archaeologist at BRIN in Bandung, Indonesia, told Nature that his work showed people in the area lived in caves between 12,000 and 6,000 years ago, and left no evidence of having the “remarkable masonry capabilities” supposedly employed by people of the area thousands of years before them to build the "pyramid".  READ MORE...

Pythagorean Theorem Found Older Than Pythagoras

Study math for long enough and you will likely have cursed Pythagoras's name, or said "praise be to Pythagoras" if you're a bit of a fan of triangles.

But while Pythagoras was an important historical figure in the development of mathematics, he did not figure out the equation most associated with him (a2 + b2 = c2). 

In fact, there is an ancient Babylonian tablet (by the catchy name of IM 67118) which uses the Pythagorean theorem to solve the length of a diagonal inside a rectangle. The tablet, likely used for teaching, dates from 1770 BCE – centuries before Pythagoras was born in around 570 BCE.

Another tablet from around 1800–1600 BCE has a square with labeled triangles inside. Translating the markings from base 60 – the counting system used by ancient Babylonians – showed that these ancient mathematicians were aware of the Pythagorean theorem (not called that, of course) as well as other advanced mathematical concepts.

"The conclusion is inescapable. The Babylonians knew the relation between the length of the diagonal of a square and its side: d=square root of 2," mathematician Bruce Ratner writes in a paper on the topic. 

"This was probably the first number known to be irrational. However, this in turn means that they were familiar with the Pythagorean Theorem – or, at the very least, with its special case for the diagonal of a square (d2 = a2 + a2 = 2a2) – more than a thousand years before the great sage for whom it was named."

So why did this get attributed to Pythagoras? No original writing from Pythagoras survives. What we know of him was passed on by others, in particular the Pythagoreans – members of a school he set up in what is now modern-day southern Italy. 

The school, named the Semicircle of Pythagoras, was secretive, but knowledge learned there or discovered was passed on, and often attributed to the man himself.   READ MORE...

New Language Evolving in USA

A distinct new dialect has been emerging in certain pockets of Miami in recent times as a result of cultural intermingling between Spanish and English speakers.


The new parlance is a Spanish-influenced dialect of English being spoken in Southern Florida, a lingo-infusion born out of decades of immigration from Spanish-speaking countries, most notably Cuba since the end of the revolution in 1959.


With its majority Hispanic and Latino population, Miami is considered one of the most bilingual cities in the US and it’s also arguably the most dialectally diverse Spanish-speaking city in the world. 

Over recent decades, the rich influence of the Spanish language has intermingled with more established American English dialects, giving rise to its own expressions and phrases.


Linguists at Florida International University in Miami have been keeping an eye on this linguistic development over the past 10 years or so and believe it shows a beautiful example of how human languages are constantly shape-shifting in the face of historical and social conditions.


“All words, dialects, and languages have a history,” Professor Phillip M. Carter, Director of the Center for Humanities in an Urban Environment at the Florida International University, told IFLScience.


“In Miami, there are many ways of speaking English. The variety we have been studying for the past 10 years or so is the main language variety of people born in South Florida in Latinx-majority communities. 

The variety is characterized by some unique but ultimately minor pronunciations, some minor grammatical differences, and word differences, which are influenced by the longstanding presence of Spanish in South Florida,” added Carter.  READ MORE...

Star Older Then Universe

The star HD 140283 has been called the "Methuselah star" for its extreme age. At an estimated over 14 billion years old, it’s the oldest star we know, at least within our galaxy. A star that old is certainly interesting, particularly when it is so close to us it can be seen with binoculars, however, that appears to put it older than the universe. How that can be? A closer examination reveals the star is special, but not that special.


The standard estimate of the time since the Big Bang is 13.79 billion years. The figure is derived from the rate of expansion of the universe using Einstein's relativity but has been validated through a variety of methods. However, that number is now facing at least three distinct challenges. As evidence, proponents point to the existence of stars estimated to be either older than 13.8 billion years, or so close to that age that there shouldn’t have been time for them to form.


Not surprisingly HD 140283 gets prime billing (helped by its catchy nickname derived from a Biblical ancestor of Noah said to have lived to 969) due to a 2013 study using Hubble data that estimated it is 14.46 billion years old, plus or minus 800 million years. That would make it potentially older than the universe.


The biggest claim regarding HD 140283 is that it disproves the Big Bang. After all, if there is even one star 14.5 billion years old then the explosion that started the universe couldn’t have happened less than 14 billion years ago. The Big Bang is now so central to our cosmology that were it to be disproved it would create a scientific revolution the like of which we have not seen for a long time.


A smaller, but still dramatic, change would be required to adapt to the recent claim that the Big Bang happened, but almost twice as long ago as most estimates put it, at 26.7 billion years ago.


Neither of these views has much support among astrophysicists, but some do suspect we’ve got our estimates of the timing of the Big Bang more modestly wrong, and the universe is really around 15 billion years old. Although such an estimate would raise a few questions about why our estimates for the universe’s expansion rate are out, if proven, accompanying changes to our thinking would be evolutionary not revolutionary.

In that context, it’s worth asking: if the universe was 26 billion years old, wouldn’t we expect to find 20 billion-year-old stars? It’s true we’ve only really looked across a small portion of the galaxy, but if the universe is that old, Methuselah looks suspiciously young. Then take that question a step further and ask what we might expect to see if the universe had no beginning and has always been here.  READ MORE...

Never Seen Before Diamonds

The extreme temperatures and pressures produced when a space rock slams into the Earth can create distinctive materials, such as the shocked quartz used to identify the remains of such events. Arizona's Canyon Diablo contains diamonds with unusual structures, but scientists have been misinterpreting what makes them special.

Very different processes can lead to the same minerals. Although diamonds can be made by various terrestrial forces, they can also be produced from the shock wave when an asteroid runs into the Earth with only a small portion of its energy dissipated in the atmosphere.

However, when scientists used advanced imaging techniques to look at diamonds from the Canyon Diablo meteorite, they found these were no ordinary gemstones. The Canyon Diablo meteorite fell around 50,000 years ago, creating Meteor Crater – one of the most intact impact craters in the world.

In a 2022 study, the researchers reported that these stones share diamonds' proverbial hardness, but are also unusually malleable. Moreover, they have electronic properties that can be tuned, making them potentially useful for electronics.  READ MORE...

What Time Is It OnThe Moon?

Aztec Sun Stone

One of the most famous and important surviving artifacts from the Aztec Empire reveals how they expected the apocalypse to go down – but also the rather sneaky way they figured out to avoid it.

If there’s only one thing you know about classical Mesoamerican apocalypse myths, it’s probably this: that the world ended in 2012, and the Mayas predicted it.

Of course, as archaeologists (and, you know, calendar owners throughout the last decade) were quick to point out, that was never true – the Maya didn’t even really have an end-of-the-world myth. A few thousand miles North, however, and there was another civilization that definitely did worry about the impending apocalypse: the Aztecs.

So worried were they, in fact, that they regularly offered up human lives in the hopes of staving off The End for another year. At least, that’s what Susan Milbrath, a Latin American art and archaeology curator at the Florida Museum of Natural History, reads in the gigantic relic known as the Sun Stone: a 24-ton, circular, basalt calendar stone which, she believes, we’ve been misunderstanding for centuries.

While experts have long thought that the central image in the Stone shows Tonatiuh, the Aztec sun deity, Milbrath’s 2017 paper on its eclipse imagery suggests the depiction may be more nuanced. Rather than simply portraying the face of the heart-devouring god, she interpreted the image as showing their death during an eclipse – an event that the civilization believed would lead to a global and earth-shaking apocalypse.  READ MORE...

Space Time - Quantum Magic

Maybe quantum chaos will lead to a better theory of gravity.

Image Credit: kakteen/Shutterstock.com

All the world’s a stage and the stage itself is space-time where all the laws of physics are merely players. But maybe space-time is not the fundamental aspect that it is believed to be. A team of researchers from Japan’s RIKEN suggests that space-time could emerge from quantum properties, and one in particular that is involved in it is called quantum magic.

That is not something out of a Marvel movie despite sounding like it. It is actually a mathematical measure of how difficult is to simulate a quantum state on a regular (read that as non-quantum) computer. It turns out that apart from the simplest quantum states, anything with a bit of chaos will end up being maximally magical, which is a wonderful mathematical euphemism for we can’t model them.

How does that relate to space-time? Well, there is a quantum theory that needed an extra ingredient and that particular flavor might be quantum magic. The theory is called bulk quantum gravity and it was proposed in the 1990s to try to reconcile gravitational and quantum theories. A requirement is that space-time is something that emerges from the theory, not something that is assumed a priori.

“Physicists have long been fascinated about the possibility that space and time are not fundamental, but rather are derived from something deeper,” lead author Kanato Goto of the RIKEN Interdisciplinary Theoretical and Mathematical Sciences, said in a statement.  READ MORE...

A Crack in the Earth's Magnetic Field

On Thursday, a crack opened in Earth’s magnetic field and stayed open for nearly 14 hours, allowing Vecna and his minions through from the Upside Down. OK, perhaps not that last bit, but it did allow some powerful solar winds to pour through the hole, creating a geomagnetic storm that sparked some pretty epic aurora.

The crack in the magnet field was created by a rare phenomenon called a co-rotating interaction region (CIR) from the Sun. CIRs are large-scale plasma structures generated in the low and mid-latitude regions of the heliosphere – the region surrounding the Sun that includes the solar magnetic field and the solar winds – when fast and slow-moving streams of solar wind interact.

Like coronal mass ejections (CMEs), CIRs get flung out from the Sun towards Earth and can contain shockwaves and compressed magnetic fields that cause stormy space weather, which usually presents itself to us as pretty aurorae.

This one hit Earth’s magnetic field in the early hours of July 7 and caused a long-lasting G1-class geomagnetic storm. National Oceanic and Atmospheric Administration (NOAA) analysts suspect a CME was embedded in the solar wind ahead of the CIR, Spaceweather.com reports.

Don't worry, cracks in Earth's magnetic field are normal. The magnetic field acts as a shield to protect us from solar storms spat out by the Sun. It was thought they opened and closed relatively quickly but now we know they can stay open for hours.  READ MORE...

Opening A 830 Million Year Old Crystal

Scientists recently announced the tantalizing discovery of ancient prokaryotic and algal cells – which may potentially still be alive – inside an 830-million-year-old rock salt crystal. Now, the researchers have spoken a little bit more about their recent study and suggested they have plans to crack open the crystal in the hope of revealing whether this ancient life is truly still alive.

Initially reported in the journal Geology earlier this month, the team used a selection of imaging techniques to discover well-preserved organic solids locked within fluid inclusions embedded in an 830-million-year-old piece of rock salt, also known as halite. They argue that these objects bear an uncanny resemblance to cells of prokaryotes and algae.

Crystalized rock salt is not capable of sustaining ancient life by itself, so the potential microorganisms are not simply locked within the crystals, like an ant trapped in amber. As rock salt crystals form through the evaporation of salty seawater, they can trap small amounts of water and microscopic organisms in primary fluid inclusions.  TO SEE VIDEO AND READ MORE, CLICK HERE...