There’s a new record holder for the most accurate clock in the world. Researchers at the National Institute of Standards and Technology (NIST) have improved their atomic clock based on a trapped aluminum ion. Part of the latest wave of optical atomic clocks, it can perform timekeeping with 19 decimal places of accuracy.

Optical clocks are typically evaluated on two levels — accuracy (how close a clock comes to measuring the ideal “true” time, also known as systematic uncertainty) and stability (how efficiently a clock can measure time, related to statistical uncertainty). This new record in accuracy comes out of 20 years of continuous improvement of the aluminum ion clock. Beyond its world-best accuracy, 41% greater than the previous record, this new clock is also 2.6 times more stable than any other ion clock. Reaching these levels has meant carefully improving every aspect of the clock, from the laser to the trap and the vacuum chamber.

The team published its results in Physical Review Letters.

“It’s exciting to work on the most accurate clock ever,” said Mason Marshall, NIST researcher and first author on the paper. “At NIST we get to carry out these long-term plans in precision measurement that can push the field of physics and our understanding of the world around us.”

Indulge me in a rant. If we're going to redefine the second because of advancements in measuring sensitivity, doesn't this become a good time to reconsider the SI structure?

Bad approximations of distances in the 18th century brought us the metric system. With the sort of precision we now have, not to mention the need for nongeocentric units as space increasing becomes a field of research, why are we using a flawed system based on guesses from a few guys in France during The Enlightenment?

I've no issue with shorthand like AUs or light-years for large distances, but it feels we should have the basic tenets of the universe as the basis. Like, the light-nanosecond for distance on the human scale (it's about 11.8 inches or 29.98cm) and then reconfigure the system from first principles.

I'm not saying we should throw out measuring systems each time they get more precise, but a lot of cruft is grandfathered in to what we currently use. We can't just go for further precision and then shrug and say "well, nothing we can do about it."

Ten years ago, medical marijuana was only legal in about half of U.S. states, and recreational use was outlawed in most of the country. Today, although marijuana remains illegal at the federal level, most states have legalized some use of the drug, setting off a green rush that, according to the data platform Statista, is predicted to bring in nearly $47 billion in revenue this year.

But in the absence of regulations or guidance from the federal government, states are struggling to oversee the flood of new businesses and products. Although experts told Undark that illicit marijuana remains the bigger safety hazard, across the country, independent tests have documented rampant problems with the legal products on dispensary shelves, including overstated THC levels as well as amounts of pesticides, mold, and heavy metals that exceed state limits.

Whistleblower reports and interviews with industry insiders show how some producers seek out lenient testing labs to examine their product. Some labs, in turn, may see a boost in business if they inflate THC values and greenlight contaminated products — a pattern corroborated by Undark’s own analysis of testing data obtained through state open records laws.

More potent products sell better, said Mike Graves, a one-time major Oklahoma grower who has tangled with Parker and Hrabina. In an interview with Undark, Graves acknowledged shopping around for favorable labs: “I’d roll a joint,” he said, and would “send it out to three different companies.” He would then use whichever company returned the highest THC level to provide the required testing certification for his products.

The industry’s problem, Graves said, is lax oversight of bad labs.

Believe it or not, this is a very short excerpt. Ever since I discovered Delta 8 years ago, I won't buy anything without a CoA, but back then it was all online, and Redditors would regularly post about differing results when they sent samples off for testing.

In this way, users were regulating the market for those who knew where to look -- and, in the end, pretty much three to four distillate producers got the overall stamp of approval. That's simply not feasible in a fractured physical retail flower market.

And boards or commissions previously used to handling just alcohol have an entirely new issue on their hands, as alcohol is rather widely known for being a good disinfectant. Under a previous administration, I'd have said marijuana should have fallen under USDA testing upon federal legalization, but should both randomly happen, the current patchwork system would likely be more reliable.

I'm trying to beef up my reading agenda. Also, I prefer a broad range of scientific topics like ones offered by Scientific American.

As the 2024 U.S. presidential election unfolded, many young Americans found themselves emotionally drained—not just by the outcome, but by the long months of anticipation and constant news coverage.

Link to the abstract: https://jamanetwork.com/journals/jama/article-abstract/2836060

Humpback whales may be trying to communicate with us, using bubbles.

For the first time, scientists from the SETI Institute and UC Davis have documented humpback whales blowing large “vortex bubble rings” that resemble “smoke” rings during calm, voluntary interactions with humans — behavior that appears unrelated to feeding, mating or defense.

“Humpback whales often exhibit inquisitive, friendly behavior towards boats and human swimmers,” said Jodi Frediani, a marine wildlife photographer and UC Davis affiliate, in a press release.

The team observed 12 separate bubble ring episodes involving 11 whales and 39 rings across the Pacific and Atlantic Oceans. Researchers say the bubble rings differ from other whale behaviors involving bubbles.

While humpbacks commonly use bubble nets to trap prey and bubble trails during mating, these bubble rings seemed to occur only during relaxed, voluntary encounters with humans — not while hunting or competing for mates.

Link to associated paper/study

Stephen Hawking, a British physicist and arguably the most famous man suffering from amyotrophic lateral sclerosis (ALS), communicated with the world using a sensor installed in his glasses. That sensor used tiny movements of a single muscle in his cheek to select characters on a screen. Once he typed a full sentence at a rate of roughly one word per minute, the text was synthesized into speech by a DECtalk TC01 synthesizer, which gave him his iconic, robotic voice.

But a lot has changed since Hawking died in 2018. Recent brain-computer-interface (BCI) devices have made it possible to translate neural activity directly into text and even speech. Unfortunately, these systems had significant latency, often limiting the user to a predefined vocabulary, and they did not handle nuances of spoken language like pitch or prosody. Now, a team of scientists at the University of California, Davis has built a neural prosthesis that can instantly translate brain signals into sounds—phonemes and words. It may be the first real step we have taken toward a fully digital vocal tract.

Some interesting developments here that definitely seem to advance the state of the art.

The U.S. Department of Defense will no longer provide satellite weather data, leaving hurricane forecasters without crucial information about storms as peak hurricane season looms in the Atlantic.

For more than 40 years, the Defense Department has operated satellites that collect information about conditions in the atmosphere and ocean. A group within the Navy, called the Fleet Numerical Meteorology and Oceanography Center, processes the raw data from the satellites, and turns it over to scientists and weather forecasters who use it for a wide range of purposes including real-time hurricane forecasting and measuring sea ice in polar regions.

This week, the Department of Defense announced that it would no longer provide that data, according to a notice published by the National Oceanic and Atmospheric Administration, NOAA.

Well, that's just great at the start of hurricane season.

More Info About Open Access.

First off, that hed is terrible. And this could have gone in either Food and Drink or Environment; for that reason, I'm splitting the baby and putting it here, as the "this" referenced is still in research phases.

Inside an anonymous building in Oxford, Riley Jackson is frying a steak. The perfectly red fillet cut sizzles in the pan, its juices releasing a meaty aroma. But this is no ordinary steak. It was grown in the lab next door.

What's strangest of all is just how real it looks. The texture, when cut, is indistinguishable from the real thing.

"That's our goal," says Ms Jackson of Ivy Farm Technologies, the food tech start-up that created it. "We want it to be as close to a normal steak as possible."

Lab-grown meat is already sold in many parts of the world and in a couple of years, pending being granted regulatory approval, it could also be sold in the UK too - in burgers, pies and sausages.

The elephant in the room is the reporter got to see it and smell it being cooked, but because of the lack of approval, couldn't speak to the taste.

Bacteria can be used to turn plastic waste into painkillers, researchers have found, opening up the possibility of a more sustainable process for producing the drugs.

Chemists have discovered E coli can be used to create paracetamol, also known as acetaminophen, from a material produced in the laboratory from plastic bottles.

“People don’t realise that paracetamol comes from oil currently,” said Prof Stephen Wallace, the lead author of the research from the University of Edinburgh. “What this technology shows is that by merging chemistry and biology in this way for the first time, we can make paracetamol more sustainably and clean up plastic waste from the environment at the same time.”

The publication of AviList today means that, for the first time ever, there is a unified global checklist of all bird species found on planet Earth.

AviList is a brand-new, complete global checklist of species and taxonomy. Containing 11,131 species, 19,879 subspecies, 2,376 genera, 252 families and 46 orders, it brings together the latest global thinking on what constitutes a species and shakes up our understanding of the avian world.

Until now, ornithologists, conservationists and birders have used a selection of global checklists, each with its own reasoning on what constitutes a specific species of bird. AviList’s unified view has been developed by the Working Group on Avian Checklists, containing representatives from BirdLife International, the Cornell Lab of Ornithology, the American Ornithological Society, the International Ornithologists’ Union IOU) and Avibase. The new checklist will replace the International Ornithological Congress and Clements lists, and will be updated annually.

Newswise — Cambridge, MA— A new landmark study has pinpointed the location of the Universe's "missing" matter, and detected the most distant fast radio burst (FRB) on record. Using FRBs as a guide, astronomers at the Center for Astrophysics | Harvard & Smithsonian (CfA) and Caltech have shown that more than three-quarters of the Universe's ordinary matter has been hiding in the thin gas between galaxies, marking a major step forward in understanding how matter interacts and behaves in the Universe. They’ve used the new data to make the first detailed measurement of ordinary matter distribution across the cosmic web.

"The decades-old 'missing baryon problem' was never about whether the matter existed," said Liam Connor, CfA astronomer and lead author of the new study. "It was always: Where is it? Now, thanks to FRBs, we know: three-quarters of it is floating between galaxies in the cosmic web." In other words, scientists now know the home address of the “missing” matter.

And this is just the beginning for FRB cosmology. "We're entering a golden age," said Ravi, who also serves as the co-PI of Caltech’s Deep Synoptic Array-110 (DSA-110). "Next-generation radio telescopes like the DSA-2000 and the Canadian Hydrogen Observatory and Radio-transient Detector will detect thousands of FRBs, allowing us to map the cosmic web in incredible detail."

The study is published today in Nature Astronomy.

Direct link to the image in the browser: https://cosmos2025.iap.fr/fitsmap/?ra=150.1203188&dec=2.1880050&zoom=2

Article copied:

In the name of open science, the multinational scientific collaboration COSMOS on Thursday has released the data behind the largest map of the universe. Called the COSMOS-Web field, the project, with data collected by the James Webb Space Telescope (JWST), consists of all the imaging and a catalog of nearly 800,000 galaxies spanning nearly all of cosmic time. And it’s been challenging existing notions of the infant universe.

“Our goal was to construct this deep field of space on a physical scale that far exceeded anything that had been done before,” said UC Santa Barbara physics professor Caitlin Casey, who co-leads the COSMOS collaboration with Jeyhan Kartaltepe of the Rochester Institute of Technology. “If you had a printout of the Hubble Ultra Deep Field on a standard piece of paper,” she said, referring to the iconic view of nearly 10,000 galaxies released by NASA in 2004, “our image would be slightly larger than a 13-foot by 13-foot-wide mural, at the same depth. So it’s really strikingly large.” An animated zoom-out from the center of the COSMOS-Web field to a full-size comparison between COSMOS-Web and the Hubble Ultra Deep Field

The COSMOS-Web composite image reaches back about 13.5 billion years; according to NASA, the universe is about 13.8 billion years old, give or take one hundred million years. That covers about 98% of all cosmic time. The objective for the researchers was not just to see some of the most interesting galaxies at the beginning of time but also to see the wider view of cosmic environments that existed during the early universe, during the formation of the first stars, galaxies and black holes.

“The cosmos is organized in dense regions and voids,” Casey explained. “And we wanted to go beyond finding the most distant galaxies; we wanted to get that broader context of where they lived.” A 'big surprise'

And what a cosmic neighborhood it turned out to be. Before JWST turned on, Casey said, she and fellow astronomers made their best predictions about how many more galaxies the space telescope would be able to see, given its 6.5 meter (21 foot) diameter light-collecting primary mirror, about six times larger than Hubble’s 2.4 meter (7 foot, 10 in) diameter mirror. The best measurements from Hubble suggested that galaxies within the first 500 million years would be incredibly rare, she said.

“It makes sense — the Big Bang happens and things take time to gravitationally collapse and form, and for stars to turn on. There’s a timescale associated with that,” Casey explained. “And the big surprise is that with JWST, we see roughly 10 times more galaxies than expected at these incredible distances. We’re also seeing supermassive black holes that are not even visible with Hubble.” And they’re not just seeing more, they’re seeing different types of galaxies and black holes, she added.

“Since the telescope turned on we’ve been wondering ‘Are these JWST datasets breaking the cosmological model? Because the universe was producing too much light too early; it had only about 400 million years to form something like a billion solar masses of stars. We just do not know how to make that happen." 

'Lots of unanswered questions'

While the COSMOS-Web images and catalog answer many questions astronomers have had about the early universe, they also spark more questions.

“Since the telescope turned on we’ve been wondering ‘Are these JWST datasets breaking the cosmological model? Because the universe was producing too much light too early; it had only about 400 million years to form something like a billion solar masses of stars. We just do not know how to make that happen,” Casey said. “So, lots of details to unpack, and lots of unanswered questions.”

In releasing the data to the public, the hope is that other astronomers from all over the world will use it to, among other things, further refine our understanding of how the early universe was populated and how everything evolved to the present day. The dataset may also provide clues to other outstanding mysteries of the cosmos, such as dark matter and physics of the early universe that may be different from what we know today.

“A big part of this project is the democratization of science and making tools and data from the best telescopes accessible to the broader community,” Casey said. The data was made public almost immediately after it was gathered, but only in its raw form, useful only to those with the specialized technical knowledge and the supercomputer access to process and interpret it. The COSMOS collaboration has worked tirelessly for the past two years to convert raw data into broadly usable images and catalogs. In creating these products and releasing them, the researchers hope that even undergraduate astronomers could dig into the material and learn something new.

“Because the best science is really done when everyone thinks about the same data set differently,” Casey said. “It’s not just for one group of people to figure out the mysteries.” Image Caitlin Casey wears a puffy coat in front of a lake Photo Credit Courtesy Photo Caitlin Casey

Caitlin Casey is an observational astronomer with expertise in high-redshift galaxies. She uses the most massive and unusual galaxies at early times to test fundamental properties of galaxy assembly (including their gas, stars, and dust) within a ΛCDM cosmological framework. Read more

For the COSMOS collaboration, the exploration continues. They’ve headed back to the deep field to further map and study it.

“We have more data collection coming up,” she said. “We think we have identified the earliest galaxies in the image, but we need to verify that.” To do so, they’ll be using spectroscopy, which breaks up light from galaxies into a prism, to confirm the distance of these sources (more distant = older). “As a byproduct,” Casey added, “we’ll get to understand the interstellar chemistry in these systems through tracing nitrogen, carbon and oxygen. There’s a lot left to learn and we’re just beginning to scratch the surface.”

The COSMOS-Web image is available to browse interactively ; the accompanying scientific papers have been submitted to the Astrophysical Journal and Astronomy & Astrophysics.

Extractive activity in international waters – including fishing, seabed mining, and oil and gas exploitation – should be banned forever, according to top scientists.

The high seas, the vast international waters beyond national jurisdiction, remain largely unprotected and are increasingly threatened.

Writing in the journal Nature, Professor Callum Roberts and co-authors argue that stopping all extractive activity in international waters would prevent irreversible damage to marine biodiversity, the climate, and ocean equity.

This would also be a decisive step toward achieving the goal of protecting 30% of the world’s oceans by 2030, as set out in the Global Biodiversity Framework agreed in 2022.

“Life in the high seas is vital to the ocean’s ability to store carbon and is too important to lose,” said lead author Professor Callum Roberts, Professor of Marine Conservation at the University of Exeter and lead researcher with the Convex Seascape Survey. “This paper makes the case that we must stop extractive activities in the high seas permanently, to protect the climate, restore biodiversity and safeguard ocean function for future generations.”